question_answer

Read the following and answer the questions from [16] to [20].

Any change in the velocity of an object results in an acceleration by increasing speed, decreasing speed or changing direction. Yes, that's right, a change in the direction of motion results in an acceleration even if the moving object neither speed up nor slowed down. That's because acceleration depends on the change in velocity and velocity is a vector quantity; one with both magnitude and direction.

Thus, a falling apple accelerates, a car stopping at a traffic light accelerates and the moon in orbit around the Earth accelerates.

Hence, acceleration occurs anytime an object's speed increases or decreases, or it changes direction.

Acceleration can be defined as rate of change of which quantity?

A) Displacement

B) Velocity

C) Momentum                               

D) Inertia