If you know the answer please answer the following question down in the picture below.

Answer:

1-Average speed

2-constant

Explanation:

Question 1 : You have the distance and time , need to find average speed

Question 2 : traveling at the same speed that means it's constant

Answer:

40,000N of force

Explanation:

The formula for force is F=ma. If we plug in the values, F=(20,000kg)(2m/s^2).

Answer:

for number 10

I can't see what needs to be calculated for the first question though

Answer:

compaction

Explanation:

Answer:bum

Explanation:

Answer:

[tex]a=1.3\ m/s^2[/tex]

Explanation:

It is given that,

Initial velocity, u = 4 m/s

Final velocity, v = 6 m/s

Time, t = 1.5 s

We need to find the average acceleration of a sprinter during this period. We know that the rate of change of velocity of an object is equal to its acceleration. So,

[tex]a=\dfrac{v-u}{t}\\\\a=\dfrac{(6-4)\ m/s}{1.5\ s}\\\\a=1.33\ m/s^2[/tex]

So, the acceleration of the sprinter is [tex]1.33\ m/s^2[/tex]. Hence, the correct option is (d).

Answer:

The answer is RAIN!!!!!!

Explanation:

Rain always goes back up in the form of condensation, steam etc etc etc. That is where the rain comes from

Answer:

On a roller coaster, energy changes from potential to kinetic energy and back again many times over the course of a ride. Kinetic energy is energy that an object has as a result of its motion. Traditionally, the coaster cars are pulled up the first hill by a chain; as the cars climb, they gain potential energy.

Mechanical engineers are concerned about the mechanics of energy — how it is generated, stored, and moved. For example, mechanical and civil engineers ensure that there is sufficient potential energy, which is converted to kinetic energy, to move cars along an entire roller coaster ride.

"Kinetic energy is a form of energy that an object or a particle has by reason of its motion. If work, which transfers energy, is done on an object by applying a net force, the object speeds up and thereby gains kinetic energy."

"Potential energy is the energy held by an object because of its position relative to other objects, stresses within itself, its electric charge, or other factors."

Potential energy, stored energy that depends upon the relative position of various parts of a system. A spring has more potential energy when it is compressed or stretched. A steel ball has more potential energy raised above the ground than it has after falling to Earth.

Know more about kinetic energy here

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Answer:

vx = 65 yd/3 sec  = 21.7 yd/sec  since horizontal speed is constant

vy = g t = (32 / 3) yd/sec^2 * 1.5 sec = 16 yd/sec   where 32/3 is the acceleration due to gravity in yds / sec^2  and 1.5 is the time to travel each way in the vertical direction

V = (vx^2 + vy^2)^1/2 = (21.7^2 + 16^2)^1/2 = 27 yd/sec

tan theta = vy/vx = 16 / 21.7 = .737    theta = 36.4 deg

You can check using the range formula:

R = v^2 sin (2 theta) / g = 27^2 * .955 / (32 / 3) = 65.3 yds  

The difference from 65 yds may be rounding error.

Answer:

gas

Explanation:

Answer:

Person above me is big brain!

Explanation:

They are correct!

Give them some love and mark them as brainliest!

Answer:

0.267 m/s^2

Explanation:

6 km/hr * 1hr/ 3600 sec * 1000m/ 1 km

1.67 m/s to 3 m/s

vf=vi+at

3 m/s= 1.67 m/s+ a(5 s)

a=0.267 m/s^2

1800 sec = 30 min

Hi there !

18km = 18×1000m = 18000 m

1 s ............... 10m

x s ...............18000m

x = 1×18000/10 = 1800 sec = 30 min

Good luck !

Answer: A

Explanation: ive done this already bro i just wanted to help

Answer:

v = u - gt

At maximum heitht, v = 0

0 = u - (9.8)(3)

u = 29.4 m/s initial velocity

Answer:

1. Installing solar panels on the roof. This is an example of renewable energy, and solar panels help provide electricity for a home.

2. Using LED lights instead of traditional lightbulbs. The modern LED lights use much less electricity and function up to 90% more efficiently than the traditional lightbulbs.

3. Using rain barrels to collect water from the roof. Installing rain barrels to collect rainwater to water your plants and garden is a great way to save water and cut down on your water bill.

Hope this helps! :)

Answer:

Because there is no gravity determining where you are.

Explanation:

I hope this helps

have a good day :)

Answer:

they both would hit at the same time

Explanation:

Answer: Whichever one is heavier will hit first

Explanation:

Answer: Speed

Explanation:

Speed is Defined as defined as D/T or distance over time

Answer:

The answer is

Explanation:

To find the time taken we use the formula

[tex]t = \frac{d}{v} \\ [/tex]

where

d is the distance covered

v is the velocity

t is the time

From the question

d = 1200 miles

v = 300 mi/hr

We have

[tex]t = \frac{1200}{300} = \frac{12}{3} \\ [/tex]

We have the final answer as

Hope this helps you

Answer:

Basic units=those units of measurement which do not depend upon any other units are called basic units. Example length, mass, time, current etc.

Derived units=those units which are expressed in terms of fundamental units are called derived units. Example area, volume, density etc.

Answer:

hmm I don’t understand

Explanation:

Answer:

d= 45 m

Explanation:

speed = distance / time

15= d/ 3

d= 45 m

Answer:

speed = 12 miles per second

= 12 mi/s

Explanation:

Answer:

F = 0.483 N

Explanation:

Initial momentum, [tex]P_i= 7\ kg-m/s[/tex]

Final momentum, [tex]P_f= 22\ kg-m/s[/tex]

Time, t = 31 s

We need to find the force of a lead ball. We can use here the impulse momentum theorem.

[tex]\text{Change in momentum}=F\times t[/tex]

F is force

[tex]P_f-P_i=Ft\\\\F=\dfrac{P_f-P_i}{t}\\\\F=\dfrac{22-7}{31}\\\\F=0.483\ N[/tex]

So, the force is 0.483 N.

Answer:

Explanation:

The mass of a substance given it's molar mass and number of moles can be found by using the formula

mass = Molar mass × number of moles

From the question

molar mass = 283.03 g/mol

number of moles = 7.5 mol

So we have

mass = 283.03 × 7.5 = 2122.725

We have the final answer as

Hope this helps you

Answer:

the pollution

Explanation:

because is making big consecuences in the world

If I could solve one of  the world's greatest problems, then I would  like to choose pollution problem.

I would choose the pollution problem to be solved because it affects various natural resources of the environment.

Pollution is one the biggest issue in the world these days and It is rising day by day. It affects the environment directly or indirectly.

There are various types of pollution. Some of thees are

The main cause of water pollution is various toxic substances got mixed in various water resources.

Similarly Air Pollution happens because of the harmful gases and substances present in the air.

Noise pollution occurs due to the sound of machines, loud musics and sound of vehicles.

Every human being should take steps to solve the issue of the pollution.

For more information about the pollution, follow the link given below.

https://brainly.com/question/1040743.

Answer:

1

2

3

4

Explained:

All the statement are correct about surface tension of water. Due to this force, water surface exhibit peculiar properties  compared to the bulk of the system.

Surface tension is the potential for liquid surfaces that are at rest to condense into the smallest surface area. Razor blades and insects, which have a density greater than that of water, may float on the surface of the water without even getting partially buried because to surface tension.

Surface tension at liquid-air contacts originates from the liquid molecules' stronger attraction to one another owing to cohesion than to the air molecules due to adhesion.

Surface tension is the result of water molecules pulling inward with a strong attractive force. The attractive force brings the molecules on the surface of the water close together makes attractive force causes the molecules to be drawn toward the water molecules beneath the surface.

Since there are no water molecules above the surface there are uneven forces. This causes surface tension, allowing the coin to float on the water's surface.

Find more on surface tension :

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Answer:

A submission from India says the name Priyadharshini means "Beloved and pleasing to look at" and is of Sanskrit origin. According to a user from India, the name Priyadharshini is of Indian (Sanskrit) origin and means "God gift".

Answer:

an underground conduit for carrying off drainage water and waste matter

Explanation:

Answer:

an underground conduit for carrying off drainage water and waste matter.

Explanation: