Question

A driver is driving his car along a road as shown in Figure. The driver makes sure that the speed-o-meter reads exactly 40 km/h. What happens to the velocity of the car from P to Q ?

• A. Velocity remains constant
• B. Velocity first increases then decreases
• C. Velocity first decreases then increases
• D. Nothing can be decided

Answer 1

Answer: (A)

Velocity remains constant

Since the speed-o-meter of the car reads exactly 40 km/h speed. This means that speed of the car remains constant always. also, from P to Q, the car moves in a straight line i.e. direction of motion of car does not change. So, velocity of the car, which is speed and direction combined, from P to Q remains constant.