A train is moving with a speed of 20 m/s. when branks are applied after switching off the engine it comes to rest in 10 s. Calculate the retardation produced.
Please answer me tomorrow will my exam. ...
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Answer:
Given:
Final velocity v = 0
Time taken t = 20 s
Acceleration a = -2 m/s2
From the equation v = u + at, we have
u = v - at
→ u = 0 - (-2) × 20
→ u = 40 m/s2
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