Question

A train attains the speed of 40m/s suddenly brakes are applied the train stops at 50 metres. Find the time interval during which time train stops

Answer 1

Answer:

Solution,

Given,

Initial velocity (u) = 40 m/s

Final velocity (v) = 0 m/s (Train stops)

Distance travelled (d) = 50 m

time taken(t) = ?, Acceleration (a) = ?

Now,

a = (v - u) /t or, at = -40.........(1)

d = ut+1/2 at² or, 50 = 40 × t +1/2 (-40) × t

Explanation: Get the value of 't' which is the final answer. The answer comes 2.5