Question

a car travel a certain distance with speed of 40 m/s and returns with a speed u if a speed of whole journey is 48 m/s what is the value of u?​

Answer 1

Answer:

the value of u = 8

Explanation:

first speed of car = 40m/s

second speed = u

Total speed = 48

Now;

Total speed = S1 + S2

48. = 40+u

48 - 40 = u

u = 8

Therefore;the value of u = 8.