Q.5 It takes 10s and 15s respectively, for two trains travelling at different constant speeds to completely pass a telegraph post. The length of the first train is 120 m and that of the second train is 150 m. The magnitude of the difference in the speeds of the two trains (in m/s) is ______.
(A) 2.0
(B) 10.0
(C) 12.0
(D) 22.0
Answer:( A)
Explanation:
