Question

a) A person is riding a bicycle down a flat road in a straight line. What happens to the motion when the bicycle's brakes are applied. Include net force, acceleration, and inertia in the explanation.

b) Describe a situation where friction acts upon an object. Include inertia, acceleration, friction, and net force in your explanation.

Answer 1

A) The motion of the bicycle slows down due to deceleration produced by braking force and finally stops when net force on bicycle is zero.

While pedaling a bicycle is moving forward due to driving force. When breaks are applied bicycle continues its motion due inertia of motion. When the breaks are applied, due to breaking force the net force on bicycle decreases and bicycle slows down. When the net force is zero the bicycle stops.

B) If a force is applied on a body, moves forward due to the motion on a straight line with acceleration. If a frictional force is acting on the body then the net force is external force applied minus frictional force. Then the acceleration is less then earlier.