A moving train is brought to rest within 20 seconds by applying brakes. Find the initial velocity, if the retardation due to brakes is 2m/s2.
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hey dear
here is your answer
given data :
time taken (t) = 20 seconds
retardation (a) = 2 m/s^2
final velocity (v) = 0
to find : initial velocity (u)
solution :
by using 1st equation of motion
v = u+at
0 = u-2×20
u = 40 m/s
hope it helps :)
here is your answer
given data :
time taken (t) = 20 seconds
retardation (a) = 2 m/s^2
final velocity (v) = 0
to find : initial velocity (u)
solution :
by using 1st equation of motion
v = u+at
0 = u-2×20
u = 40 m/s
hope it helps :)
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