Answer to Question #137879 in Physics for Noob_Panda

Question

When the net force acting on an object increases, (a) its velocity remains uniform, (b) its acceleration remains constant, (c) a change in speed and/or direction occurs, (d) its speed always increases.

Answer 1

When the net force acting on an object increases, a change in speed and/or direction occurs because according to Newton's second law, the acceleration is

$$a=F/m.$$

Acceleration (deceleration) is responsible for the change of speed, the force may change direction also.