Question

a moving train is brought to rest in 2 sec after brakes are applied. if the retardation due to brakes is 2ms-² the initial velocity of the train is


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Answer 1

Answer:

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Explanation:

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Answer 2

Explanation:

V=0 m/s

T= 20 s

A=2 m/s^2

Using 1 St equation of motion

V=u+a•t

U=v- a •t

U= o M/s - (-2m/s^2) • (20 s)

U= 40 m/s