Question

A car travels first $60km$ of a distance in $1hr$, next $70km$ of the distance in next hour and remaining $20km$ distance in final hour. Then, its motion is:

• A. uniform motion
• B. non-uniform motion
• C. either uniform or non-uniform motion
• D. neither uniform nor non-uniform motion

Answer 1

The correct option is B non-uniform motion

During first hour, speed = $\frac{60}{1}km/h=60km/hr$
During second hour, speed = $\frac{70}{1}km/h=70km/hr$
During third hour, speed = $\frac{20}{1}km/h=20km/hr$
So, the car travels different distances in equal time intervals. This is an example of non-uniform motion.