Ram sager
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Poll

A Train starting from rest attains a velocity of 90 km/h in 2 min, then the distance travelled by the train for attaining this velocity is:

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Poll Results

70.97%(A) 1.5 km ( 22 voters )
9.68%(B) 2 km ( 3 voters )
12.9%(C) 2.5 km ( 4 voters )
6.45%(D) 1.2 km ( 2 voters )
Based On 31 Votes

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1 Answer

  1. (A) 1.5 km
    Given, u = 0, v = 90 km/h = 90 x 5/18 = 25 m/s
    From the equation of motion,
    v = u + at
    a = v/t
    or, 25/2×60
    or, 5/24 m/s²
    Distance covered is:
    S = ut + 1/2 at²
    = 0 + 1/2 x 5/24 x (120)²
    = 1/2 x 5/24 x 120 x 120
    = 1500 m
    = 1.5 km

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