Question

A car moving at a speed of 50km/hr returns with a speed of 40 km/hr.
average velocity of the car ?​

Answer 1

Answer:

ExplanationTo complete 1km distance with speed =50kmhr it tkes time t  

1

​  

=  

50

1

​  

s

To complete 1km distance with speed =40kmhr it tkes time t  

1

​  

=  

40

1

​  

s

Average speed=  

(1/50)+(1/40)

1+1

​  

=44.44m/s