Question

3. A cart at rest at the top of a roller coaster has 1000 J of

Answer 1

Answer:

600J

Explanation:

Assuming no energy is lost and perfect transfers.

On the top of the first hill, $E_{k}+E_{p}=1000$ - however there is no Kinetic Energy so - $E_k = 0$

On the second hill, the total amount of energy is still the same (1000) - this time we have a smaller amount of potential energy. We can rearrange to get $E_k=1000-400$

Answer 2

Answer:

j

Explanation: