Question

A train starts from rest with an acceleration of 2m. A man who is 9m behind the train runs with uniform speed and just manages to get into the train in 7.5 seconds. What is the speed of the man

Answer 1

for catching the train,
distance travelled by men - distance travelled by train =9m
let man's uniform speed =x m/s
so, x×7.5 - 1/2 ×2 ×7.5× 7.5 = 9
after solving we get x = 87 m/s