Question

A car goes from point A to point B, five miles away and then returns to point A. The car is going 15 mph.

What is the velocity of the car?




 

A.

–30 mph



 

B.

0 mph



 

C.

+15 mph



 

D.

+45 mph

Answer 1

Answer: B) 0 mph

Explanation:

Velocity is a vector quantity. It can be measured as rate of change of displacement.

`velocity(Displacement)/(time)`

Displacement is the straight path length between final and initial position of the body in motion.

It is given that the car goes from point A to point B and the returns to Point A. Hence, the net displacement of the car is 0 as the car comes back to its initial position.

Therefore, the velocity of the car is 0 mph.

Option B is correct.