Which of the following best states Newton’s first law of motion?
PHYSICS · Single correct · CBSE · Physics · Force and Laws of Motion · Force and Laws of Motion
Problem
Which of the following best states Newton’s first law of motion?
(a) If the net external force on an object is zero, the object must be at rest.
(b) An object will move with constant speed only if no forces act on it at all.
(c) If the net external force on an object is zero, the object’s velocity remains constant.
(d) An object will maintain its speed but may change direction even when the net external force is zero.