Question

A girl is cycling and she covers 0.5 km in 2 minutes, next 0.75 km in 3 minutes and last 1 km in 4 minutes(she is moving in the same direction), her motion is non-uniform.

• A. True
• B. False

Answer 1

The correct option is B

False

In the first part of the journey, the distance covered = 0.5 and time = 2 minutes

$So,speed=\frac{distance}{time}=\frac{0.5}{2}=\frac{1}{4}=0.25km/min$

In the second part of the journey, the distance covered = 0.75 and time = 3 minutes

$So,speed=\frac{distance}{time}=\frac{0.75}{3}=\frac{1}{4}=0.25km/min$

And, In the third part of the journey, the distance covered =1 km and time = 4 minutes

$So,speed=\frac{distance}{time}=\frac{1}{4}=0.25km/min$

The speed of the girl is same throughout the journey.

So her motion is uniform.