A motorcycle of mass 100 kilograms slowly rolls off the edge of a cliff and falls for three seconds before reaching the bottom of a gully. Its momentum upon hitting the ground is

Question

Quizplus · Accepted Answer

The momentum of an object is given by the product of its mass and velocity. Since the motorcycle is initially at rest and falls freely due to gravity, its velocity increases at a constant rate of 9.8 m/s^2. After three seconds, its final velocity is v = gt = 9.8 m/s^2 × 3 s = 29.4 m/s. Therefore, its momentum is p = mv = 100 kg × 29.4 m/s = 3,000 kg m/s.

A Motorcycle of Mass 100 Kilograms Slowly Rolls Off the Edge