Velocity Measurement | MCQs

Explanation

Velocity is measured by a speedometer.

It is a device that measures the rate of change of an object's position with respect to time.

It typically measured in units of distance per unit time.

Such as kilometers per hour (km/h) or miles per hour (mph).

Explanation

Let Speed of the man is x kmph.

Distance covered in 10 minutes at 20 kmph = distance covered in 8 minutes at (20 + x) kmph.

Or, 20×1060=860×(20+x)

Or, 200 = 160 + 8x

Or, 8x = 40

Hence, x = 5kmph