Question

Which of these is a good example of Newton's first law of inertia?

a) A car at rest suddenly accelerating
b) A moving ball slowing down and stopping
c) A book remaining still on a table
d) A falling object increasing its speed

Answer 1

Newton's first law of motion, also known as the law of inertia, states that a body at rest remains at rest or, if moving, remains in motion in a straight line at a constant speed, unless acted on by a net external force.

Step-by-step explanation:

Newton's first law of motion, also known as the law of inertia, states that a body at rest remains at rest or, if moving, remains in motion in a straight line at a constant speed, unless acted on by a net external force. In other words, an object will continue to stay at rest or continue to move in a straight line at a constant speed unless there is an external force acting on it. A good example of this law is option c) A book remaining still on a table. The book will remain at rest unless a force is applied to it.