Which one of the following statements about force and acceleration is incorrect?
PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
Which one of the following statements about force and acceleration is incorrect?
(a) If the net external force on a body is zero, its acceleration may still be non-zero.
(b) For a given mass, the acceleration of a body is directly proportional to the net force acting on it.
(c) An object moving with constant velocity experiences zero net force.
(d) Doubling both the net force and the mass of a body leaves the acceleration of the body unchanged.