NEED HELP!!!?

Question

A toy car rolled off of a ramp that was 2.5 m high. What was the car’s velocity when it exits the ramp?

Answer 1

kinetic energy = potential energy

(1/2)mv² = mgh

Cancel m

(1/2)v² = gh

multiply both sides by 2

v² = 2gh

Plug in g = 9.8 and h = 2.5

v² = (2)(9.8)(2.5)

v² = 49

Take the square root of both sides

v = 7 m/s <––––