Question

A ______ is necessary to change the speed as well as the direction of motion of an object.

Options

• force

• inertia

• momentum

• motion

Answer 1

A force is necessary to change the speed as well as the direction of motion of an object.

Explanation:

• A net force on an object causes acceleration, which means the speed or direction of motion changes.
• If no net force acts, the object keeps its current velocity (it stays at rest or moves in a straight line at constant speed).