Question

3. A roller coaster car sits at rest at the top of a hill, 23.5 meters tall. What will be the final

velocity of the car at the bottom of the hill?​

Answer 1

21.5 m/s

Step-by-step explanation:

KE at bottom = PE at top

½ mv² = mgh

v = √(2gh)

v = √(2 × 9.8 m/s² × 23.5 m)

v = 21.5 m/s