Once the car is on top of the hill it contains potential energy witch means it is storing enough energy to slide the hill until acted on. Once the car moves and slides down the hill it creates kinetic energy witch means it's in motion. The car then turns the kinetic energy into mechanical energy witch means it's working. I'm not sure if that helped but good luck!

8 0

3 years ago

How did amphibians adapt to their changing environment ?

kobusy [5.1K]

Answer:

I think it is B

7 0

3 years ago

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So what is 27+22? Is it <br> A 8338<br> B 8282<br> C 8228<br> D 8234

ivann1987 [24]

Answer:

You put the add sign, so it would be 49. I don't believe that is what you meant to put though.

Explanation:

6 0

3 years ago

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Three objects are dropped from the top of a building. The first is thrown straight down with a velocity v, the second is thrown

murzikaleks [220]

Answer:

Second ball

Explanation:

When a ball is thrown up with a certain velocity when the object reaches the same point from where it was thrown the velocity of the object becomes equal to the velocity with which the ball was thrown.

First ball

$v_g_1^2-u^2=2as\\\Rightarrow v_g_1=\sqrt{2as+u^2}\\\Rightarrow v_g_1=\sqrt{2as+v^2}$

Second ball

$v_g_2^2-u^2=2as\\\Rightarrow v_g_2=\sqrt{2as+u^2}\\\Rightarrow v_g_2=\sqrt{2as+4v^2}$

Third ball

$v_g_3^2-u^2=2as\\\Rightarrow v_g_3=\sqrt{2as+0^2}\\\Rightarrow v_g_3=\sqrt{2as}$

From the equations above it can be seen that the second ball will have the highest velocity when it hits the ground.

So, $v_g_3$

5 0

3 years ago