Question

A car is moving with a uniform velocity of 40 km h${}^{-1}$ in straight line. Its acceleration after 1 hour is:

• A. 40 km h${}^{-1}$
• B. 20 km h${}^{-1}$
• C. 30 km h${}^{-1}$
• D. zero

Answer 1

The correct option is D zero

Answer is D.

When the car is moving with uniform velocity, then there is nil acceleration in the motion of the car.
Therefore, the total acceleration of the car is 0.