Question

2. A body travels from Place A to place B with uniform speed of 10 m/s and travels back from place
A with uniform speed of 25m/s . calculate the average speed if the body for the whole journey

Ans. 14.29 m/s​

Answer 1

50Answer:

Explanation:

let the distance travelled from a to b be  x.

so total distance covered in whole journey = 2x

time taken from Ato B , t1=x/10

time taken from A to B , t2= x/25

   Vav =total distance travelled

              total time

=   2x   x/10+x/25

= 2x  / 7x /50

=2*50/7      

=14.29m/s