An object following a straight-line path at constant speed
A)has a net force acting upon it in the direction of motion.
B)has zero acceleration.
C)has no forces acting on it.
D)none of these

Question

Quizplus · Accepted Answer

If the object is moving at a constant speed in a straight line, then its velocity is not changing. Therefore, its acceleration is zero, which means there is no net force acting on it according to Newton's second law (F = m*a).

An Object Following a Straight-Line Path at Constant Speed