(a) Derive the formula s=ut+12at2, where the symbols have usual meanings.
(b) A train starting from stationary position and moving with uniform acceleration attains a speed of 36 km per hour in 10 minutes. Find its acceleration.
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Answer:
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Explanation:
(2.) if a train starts from stationary position then initial velocity of train = 0
moving uniform acceleration means constant acceleration .
given ,
final velocity ( V) = 36 km/h = 36× 5/18
= 10m/s
time taken = 10 minutes = 10× 60sec
= 600sec
use kinematics equation ,
V = u + at
10 = 0 + a × 600
a = 10/600 = 1/60 m/s²
a = 0.1667 × 10^-1 m/s² = 1.67 × 10^-2 m/s²
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Answer:
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Explanation:
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