a train accelerates uniformly from 36 km /h to 72 km/h in 20 sec . find the distance travelled
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Answer:
Explanation:
v = u + at
20 = 10 + 20a
=> 10 = 20a
=> a = 0.5
S = ut + at^2/2
S = 10×20 + 0.5×200
S = 200 + 100
S = 300
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