Question

a body covers a distance of 50km with a speed of 40km/hr. With what speed the body travelled the same distance so that it's average speed will be 48km/hr​

Answer 1

Explanation:

To 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