Question

Define force on the basis of Newton's first law of motion.

ICSE Class 9 Physics Chapter Newton's Law of Motion

Answer 1

a force is that physical cause which changes either the size or theshape or the state of rest or of motion of body

Answer 2

According to Newton's first law of motion, the external cause which has a tendency to change the state of rest or the state of motion of a body is known as force.