Determine the initial velocity of a marble that lands 1.8m away from a tabletop that is 0.8m from the ground.
Acceleration due to gravity = 9.85
0 2.25 m/s
2.6 m/s
0 1.8 m/s
4.5 m/s

Determine The Initial Velocity Of A Marble That Lands 1.8m Away From A Tabletop That Is 0.8m From The

Answers

Answer 1

Answer:

4.5 m/s

Explanation:

[tex]s_x[/tex] = Horizontal displacement = 1.8 m

[tex]s_y[/tex] = Vertical displacement = 0.8 m

[tex]u_x[/tex] = Horizontal velocity

g = Acceleration due to gravity = [tex]9.81\ \text{m/s}^2[/tex]

t = Time taken to fall down

[tex]s_y=u_yt+\dfrac{1}{2}gt^2\\\Rightarrow 0.8=0+\dfrac{1}{2}\times 9.8\times t^2\\\Rightarrow t=\sqrt{\dfrac{2\times 0.8}{9.8}}\\\Rightarrow t=0.4\ \text{s}[/tex]

[tex]s_x=u_xt+\dfrac{1}{2}a_xt^2\\\Rightarrow 1.8=u_x\times 0.4+0\\\Rightarrow u_x=\dfrac{1.8}{0.4}\\\Rightarrow u_x=4.5\ \text{m/s}[/tex]

The initial velocity of the marble is 4.5 m/s.


Related Questions

A car is initially moving at 10.5 m/s and accelerates uniformly to reach a speed of 21.7 m/s in 4.34 s. How far did the car move during this acceleration?
A. 69.9m
B. 6.99m
C. 69.6m/s
D. 6.99m/s

Answers

Answer:

A. 69.9m

Explanation:

Given parameters:

Initial velocity = 10.5m/s

Final velocity  = 21.7m/s

Time  = 4.34s

Unknown:

Distance traveled = ?

Solution:

Let us first find the acceleration of the car;

  Acceleration  = [tex]\frac{v - u}{t}[/tex]

  v is final velocity

   u is initial velocity

   t is the time

     Acceleration  = [tex]\frac{21.7 - 10.5}{4.34}[/tex]   = 2.58m/s²

Distance traveled;

     V² = U² + 2aS

    21.7² = 10.5² + 2 x 2.58 x S

   360.64 = 2 x 2.58 x S

     S = 69.9m

A baseball is hit into the air with a velocity of 27 m/s. How high does it go?

Answers

Answer:

Explanation:

If a baseball is hit into the air with a velocity of 27 m/s, we want to determine the maximum height of the ball. Using the projecile formula;

Max height H = u²/2g

u is the initial velocity of the body = 27m/s

g is the acceleration due to gravity = 9.81m/s²

H = 27²/2(9.81)

H = 729/19.62

H = 37.16m

Hence the ball went 37.16m high

Anyone get this can you please help me, can you also please do it step by step

Answers

Answer:

7.69 hours

Explanation:

3 hr/ 1000mi x 130mi = 7.69 hours or 7.7 hours



the amount of a good or service a
producer wants to sell
scarcity
O supply
demand
O capital
entrepreneurshipb

Answers

Answer:

I can't understand you're que... plzz write in a correct way..

5. An ion consist of 12 electrons and 11 proton. What is the charge
on the ion?

Answers

Answer:

-1

Explanation:

Electrons have a negative charge and protons have a positive charge. (+11) + (-12) = -1

Which of these BEST explains how Earth's surface features are formed by moving tectonic plates? *
5 points
Earth's gravity acts as an opposing force, causing the crust to push upward, break into individual plates, and move along the surface.
The minerals in lithospheric plates are attracted to Earth's magnetic poles, which causes them to move along the surface.
The spinning of Earth's outer core causes the lithosphere to break into individual plates and collide with each other.
Earth's crust is separated into individual plates that float on top of molten material, convection currents in the mantle cause them to slowly move.

Answers

Answer: The spinning of Earth's outer core causes the lithosphere to break into individual plates and collide with each other.

Earth's surface forms because of this reason:

The spinning of Earth's outer core causes the lithosphere to break into individual plates and collide with each other.

What is the wavelength of a wave with a frequency of 466 Hz and a speed of
343 m/s?
A. 1.35 m
B. 0.74 m
C. 1.6 x 105 m
D. 6.25 x 10-6 m

Answers

Answer:

The answer is option B

Explanation:

The wavelength of a wave can be found by using the formula

[tex] \lambda = \frac{c}{f} \\ [/tex]

where

c is the speed of the wave

f is the frequency

From the question

c = 343 m/s

f = 466 Hz

We have

[tex] \lambda = \frac{343}{466} \\ = 0.73605150...[/tex]

We have the final answer as

0.74 m

Hope this helps you

Answer: B: 0.74 m

Explanation:

Hope this helps / I did this question.

Why is the nucleus positive in charge?

Answers

Answer:

The nucleus has an overall positive charge as it contains the protons. Every atom has no overall charge (neutral). This is because they contain equal numbers of positive protons and negative electrons. These opposite charges cancel each other out making the atom neutral.

Explanation:

1. How do you relate the law of inertia to the balanced and unbalanced force?​

Answers

??

Explanation:

I don't get you right

A ball is thrown vertically down from the edge of a cliff with a speed of 4 m/s,
how high is the cliff, if it took 12 s for the ball to reach the ground?

Answers

By using the equation speed = distance/time we can solve for distance. The speed is 4 m/s and the time is 12 seconds. We need to rearrange the equation to Speed * Time = distance. 4(12) = 48; 48 = distance. The cliff is 48 meters high.

YO CAN YALL HELP ME IN DIS!

Answers

Answer:

i guess it will be mass or volume, but not sure

Explanation:

because the blocks volume will be same as the displaced water, then u will check the mass or volume of the water to see what the volume of a object will be.

Which statement about elements and atoms is true?
Atoms are the smallest unit of an element.
Atoms are made of particles called elements.
Elements are made of more than one type of atom.
Elements are easily broken down into atoms by a physical reaction.

Answers

atoms are the smallest unit of an element

4. Prove that:
a.
The unit of pressure is a derived unit.​

Answers

Explanation:

The pascal (symbol: Pa) is the SI derived unit of pressure used to quantify internal pressure, stress, Young's modulus and ultimate tensile strength. It is defined as one newton per square metre. It is named after the French polymath Blaise Pascal

7. A solid wax candle has a volume of 1,700 mL. The candle has a mass of 1.5 kg (1,500 g). What is the
density of the candle?

Answers

Answer:

The answer is 0.88 g/mL

Explanation:

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume} \\[/tex]

From the question

mass = 1500 g

volume = 1700 mL

We have

[tex]density = \frac{1500}{1700} = \frac{15}{17} \\ = 0.88235294...[/tex]

We have the final answer as

0.88 g/mL

Hope this helps you

Answer:

0.88

Explanation:

density = mass/volume

density = 1500/1700

density = 0.88

Explain experimental physics. ​

Answers

Answer:

This is a category of physics dealing with the observable phenomena, and experimental aspects by investigation, and scientific testing to measure the properties of matter, and energy.

Answer:

Experimental physics is the category of disciplines and sub-disciplines in the field of physics that are concerned with the observation of physical phenomena and experiments.

I hope you helped^_^

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A ball is thrown vertically upwards from a point on the ground. It was observed at a height h twice with a time interval Δt. The initial velocity of the ball is?

Answers

I don’t think we can answer this question with the information given. ANY ball thrown with ANY initial velocity v will be observed at a height h twice and with a time interval Δt.

A car travels 30 m in 5 seconds. After accelerating for 3 seconds, it travels 20 m in 2 seconds. The cars acceleration is ___m/s

Answers

divide them so 10m/s

A truck traveling at a velocity of 33m/s comes to a halt by decelerating at 11m/s^2. How far does the truck travel in the process of stopping. identify known variables such as V, V0, a, t, and delta x.

Answers

Answer:

The truck was moving 16.5 m/s during the time it took to stop, which was 3 seconds.

Initial velocity = 33 m/sFinal velocity = 0 m/sAverage velocity = (33 + 0) / 2  m/s = 16.5 m/s

Explanation:

First, how long does it take the truck to come to a complete stop?( 33 m/s ) / ( 11 m / s^2 ) = 3 secondsThen we can look at the average velocity between when the truck started decelerating and when it came to a complete stop. Because the deceleration is constant (always 11m/s^2) we can use this trick.

The time taken to stop the truck is 3 seconds. The final velocity is zero. Then, the distance travelled by the truck is 49.5  m.

What is acceleration ?

Acceleration is a physical quantity that, measures the rate of change in velocity. It is a vector quantity thus having both magnitude and direction. It can be defines as the ratio of change in velocity to the change in time.

Given initial velocity = 13.5 m/s

final velocity is zero since the bicycle is stopping.

then Δt = Δv/a

Δt = 33 m/s/ 11 m/s² = 3 seconds.

Hence, the truck will take 3 s to complete stop.

The distance covered within this time can be determined using the equation as follows:

s = u t + 1/2 at²

where u is the initial velocity

The acceleration a =  - 11 m/s² the minus sign is due to deceleration.

s =  (33m/s × 3 s) + (-11 m/s² ×3 s ×3 s) = 49.5 m.

Therefore, the truck will travel up to 49.5 m before stopping.

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I WILL MARK BRAINIEST

Answers

Answer:

i think answer b

Explanation:

how much faster will a car be going if it accelerates at 1 m/s/s for a total of 60 seconds.

Answers

Answer:

Vf = 60 [m/s]

Explanation:

To solve this problem we must use the following equation of kinematics.

[tex]v_{f}= v_{i}+(a*t)[/tex]

where:

Vf = final velocity [m/s]

Vi = initial velocity = 0

a = acceleration = 1 [m/s^2]

t = time = 60 [m]

Now replacing:

Vf = 0 + (1*60)

Vf = 60 [m/s]

HI CAN ANYONE PLS ANSWER DIS PLS!!!!!!

Answers

Answer:

Volume of an object (L): blue 105.00, yellow 105.00, green 102.50, red 101.25

Density of an object (kg/L) Mass / Volume: blue 1, yellow 1, green 1.014, red .992

Sink or Float: blue sink, yellow sink, green float, red float

hope this helps

A man weighing 490N on earth weighs 81.7N on the moon.His mass on the moon is kg

Answers

His mass is 50 kg . . . on the Moon, on the Earth, in the capsule rocketing between them, and on Halley's comet if he ever goes there.

Answer:

50kg

Explanation:

The mass of a man on the Earth and the moon is the same, so we only need to use the 490N weight on Earth.

The formula for mass is m=w/g. Plugging in the values, we can determine that m=490N/9.8m/s^2. (g is gravitational constant, which is approximately 9.8m/s^2 on Earth)

The reason that the unit in the answer is in kg is because one newton (N) is 1kg*m/s^2. The m/s^2 is cancelled out by the m/s^2 in the gravity constant, so it leaves kg.

m=50kg

The changes that are visible during a chemical reaction are signs that the nuclei in the reactants have been rearranged.
Please select the best answer from the choices provided
ОТ
OF

Answers

Answer:

the answer is F

Explanation: I put T on the question and got it wrong so it's F on edge ;)

Which type of energy is stored in a battery?
O A. Nuclear energy
O B. Electrical energy
O C. Electromagnetic energy
O D. Chemical energy

Answers

Answer:

Chemical energy is in a battery

The type of energy is stored in a battery is Chemical energy (option d)

Batteries store chemical energy. When a battery is charged, a chemical reaction occurs inside it, converting the reactants into different products. This process stores energy in the form of chemical bonds within the battery's components.

When you use the battery to power a device, the reverse chemical reaction takes place, releasing the stored energy as electrical energy. This flow of electrons creates an electric current that powers the device connected to the battery.

The capacity of a battery to store and release energy depends on the type and quantity of chemicals used in its construction. Different types of batteries, such as alkaline, lithium-ion, or lead-acid batteries, have varying chemical compositions, affecting their energy storage capabilities and overall performance.

So, the correct option is (d).

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2. The Himalayas in central Asia are the tallest mountains in the world. But fossils of seashells can be found high in these mountains, far from any ocean.
How do you think they got there?

Answers

Answer:

The sea level could have been much higher in the past.

Explanation:

The tectonic plates shifted and the mountain rose from there.

They are trapped throughout the rock whereas the seashells have been on the floor of a modest seafloor.

These same containers dropped down on the base of the silt level or sheet, as well as those layering finally became rock.Few more million generations previously, the Indian civilization or the subcontinent crashed well with the continents of Asia, making the Himalayan mountains rock which thus previously were such a sea level.

Thus the above response is appropriate.

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A doctor takes an x-ray of your body this is an example of conduction, convection, radiation?

Answers

Answer:

Radiation

Explanation:

An x-ray emits radiation to see through the outer part of your body.

Hope this helps! <3

An X-ray is a type of radiation which is a type of electromagnetic radiation in the electromagnetic spectrum.

What is electromagnetic spectrum?

The  electromagnetic spectrum consists of electromagnetic radiation consists of waves made up of electromagnetic field which are capable of propogating through space and carry the radiant electromagnetic energy.

The radiation are composed of electromagnetic waves which are synchronized oscillations of electric and magnetic fields . They are created due to change which is periodic in electric as well as magnetic fields.

In vacuum ,all the electromagnetic waves travel at the same speed that is with the speed of air.There are 7 types of electromagnetic radiation in the electromagnetic spectrum.Gamma rays have the highest energy while radio waves have least energy.

Learn more about electromagnetic spectrum,here:

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What is linear motion?

Answers

Answer:

Linear motion is a one-dimensional motion along a straight line, and can therefore be described mathematically using only one spatial dimension.

Explanation:

Linear motion is a one-dimensional motion along a straight line

A swimmer sets off headed west at 0.40 m/s directly towards the opposite shore of a swift river. The swimmer makes it to the opposite shore 30 meters downstream of their expected position. If the river is 7.5 meters wide, what is the velocity of the water relative to the shore?

Answers

Answer:

Explanation:

River is 7.5 m wide . Time taken by it cover this displacement

= displacement / velocity

=  7.5 / 0.4  

= 18.75 s

During this period , swimmer  will have a displacement of 30 m due to velocity of river water .

Displacement of 30 m downstream will be due to flow of river .

velocity of water flow = displacement / time

= 30 / 18.75

= 1.6 m /s

HURRRY PLEASSSSEEE
Energy required for cellular respiration can be processed from ____.
A) Carbohydrates
B) Fats/ Lipids
C) Proteins
D) All of the above

Answers

Answer:

fats / liquids or proteins one of them

Explanation:

..........

Answer:

D) All of the above

Explanation:

I googled it :)

2.Suppose you lifted the ring when the counter-clockwise orbiting marble was at the top of the circle. Describe the direction of the path that the marble would take.

3. Explain why the marble moved the way it did with the ring in place.

4. Explain why the marble moved the way it did when the ring was removed.

Answers

Answer:

3. The marble's trajectory was constantly being changed by running into the ring, forced it to move along the shape of the ring.

4. Once the ring was removed, the marble's momenum kept it going in a straight path as the ring was no longer forcing it to turn.

Explanation:

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