brakes are applied to a car travelling 30 metres per second its velocity is reduced to 20 metres per second in 5 seconds calculate the retardation produced by the car also calculate the distance covered in that 5 seconds
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retardation = initial velocity - current velocity / time taken
= 30-20/5
= 2m/s2.
s = ut +1/2 at2
= 175 m.
and done!