Question

4

Answer 1

Answer:

50 m/s

Explanation:

The motion of the roller coaster car parameters are;

The initial speed of the roller coaster, v = 2 m/s

The distance to reach the bottom, Δd = 200 meter

The time it takes to reach the bottom, Δt = 4 seconds

The speed at the bottom of the tracks = 22 m/s

The average speed, $v_{ave}$ = Δd/Δt

∴ $v_{ave}$ = (200 m)/(4 s) = 50 m/s

The average speed of the roller coaster ride over the 200 m drop, $v_{ave}$ = 50 m/s