Question

A truck moves along a straight highway track. It covers first $2km$ distance in $10min$, next $4km$ in $20min$ and final $6km$ in $30min$. Then, its motion is an example of :

• A. uniform motion
• B. non-uniform motion
• C. a combination of uniform and non-uniform motion
• D. neither uniform nor non-uniform motion

Answer 1

The correct option is A uniform motion

Speed of the truck in first $10min=$ $\frac{2}{10}km.mi{n}^{-1}$$=\frac{1}{5}km.mi{n}^{-1}$.

Speed of the truck in next $20min=$$\frac{4}{20}km.mi{n}^{-1}$$=\frac{1}{5}km.mi{n}^{-1}$

Speed of the truck in last $30min=$$\frac{6}{30}km.mi{n}^{-1}$$=\frac{1}{5}km.mi{n}^{-1}$

So, its speed is remaining same throughout. Its motion is an example of uniform motion.