Question

A 500-kg roller coaster car travels with some initial velocity along a track that is 5 m above the ground. The car goes down a small hill and then coasts back up a higher hill. The second hill is 12 m above the ground. What must the initial velocity of the car be for the car to be going 3 m/s at the top of the second hill?

Answer 1

Answer: D. 12 m/s

Step-by-step explanation:

Use the formula of
`v=\sqrt 2ng` then just solve by inserting the numbers.

You use the first mountain height(5) and the second mountain height(12) and insert to the equation.

Sole and you'll be left with 12.

Add the labeling "m/s"

and youre done!

tehe ur welcome vanessaaa