A motorcycle with a mass of 100 kilograms slowly rolls over the edge of a cliff and falls for three seconds before it reaches the bottom of a gully.Its momentum (in units of kilogram meters per second)just before it hit bottom and became burned rubber and scrap metal was

Question

Quizplus · Accepted Answer

The momentum (p) of an object is given by the product of its mass (m) and velocity (v), i.e. p = mv.
Here, the motorcycle falls for 3 seconds under the influence of gravity, which causes it to gain speed. The acceleration due to gravity is approximately 9.8 m/s^2.
Using the equations of motion, the velocity (v) of the motorcycle just before hitting the bottom is given by:
v = u + at
where u = 0 (initial velocity), a = 9.8 m/s^2 (acceleration due to gravity), and t = 3 s (time of fall).
Thus, v = 0 + 9.8 × 3 = 29.4 m/s
The momentum of the motorcycle just before hitting the bottom is therefore:
p = mv = 100 kg × 29.4 m/s = 3,000 kg m/s
Hence, the answer is C) 3,000.

A Motorcycle with a Mass of 100 Kilograms Slowly Rolls