Question

Choose the correct option with respect to Newton's first law of motion among the following.

• A. It is also called the law of gravitation.
• B. An object at rest can move without any external force acting on it.
• C. An object in uniform motion stays in uniform motion unless acted upon by an unbalanced force.
• D. An object in motion may come to rest without any external force acting on it.

Answer 1

The correct option is C An object in uniform motion stays in uniform motion unless acted upon by an unbalanced force.

Newton's first law of motion is also called the law of inertia.
According to this, an object at rest stays at rest and an object in uniform motion stays in uniform motion unless acted upon by an unbalanced force. Uniform motion is when an object has constant velocity(i.e.,speed and direction will not change).