Question

A small child is learning to ride a bike for the first time. Her dad decides it would be a good idea to start her on a small hill. The hill is inclined at 3.30° to the horizontal. The child starts partway down the hill, 9.00 m away from her dad, who stays at the top. She starts to wobble, so her dad sprints toward her from rest with an acceleration of 4.50 m/s2.

How far has the child gone before her parent catches her?

Answer 1

100m

Answer 2

45

Answer 3

2.13m