What is always true when an object accelerates?
A)It speeds up
B)It changes direction
C)A force is acting on it
D)Its mass changes

Question

Quizplus · Accepted Answer

According to Newton's Second Law, an object accelerates when a net force acts upon it. Therefore, it is always true that a force is acting on an object when it accelerates. Option A is not always true as an object can also decelerate. Option B is not always true as an object can accelerate in a straight line. Option D is not true as an object's mass is constant, unless some external factor changes it.

What Is Always True When an Object Accelerates