Question

Find the acceleration of a car which increases its speed from 20 m/s to 50 m/s in 5 seconds.

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Answer 1

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Answer 2

Answer:

Initial velocity = u = 20km/hr=20 x 5/18 = 5.56 m/s

Final velocity = v = 50 km/hr = 50 x 5/18 = 13.89 m/s 

Time = t = 05 sec

Acceleration = a 

a = (v- u) / t

   = (13.89 -  5.56) / 5

   = 12.778 m/s²

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