Physics · LAWS OF MOTION

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): A body can move along a straight line with uniform velocity only when a non-zero net external force acts continuously on it. Reason (R): According to Newton's First Law of Motion, if the net external force acting on a body is zero, its acceleration is zero and it continues to move with uniform velocity if already in motion. In the light of the above statements, choose the correct answer from the options given below:

1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is NOT the correct explanation of (A).
3. (A) is true but (R) is false.
4. (A) is false but (R) is true.