Question

3. A racing car is moving with a velocity of 50 m's. On applying brakes, it is uniformly retarded
and comes to rest in 20 seconds. Calculate its acceleration​

Answer 1

Explanation:

U = 50 m/s

t = 20 sec

v = 0( as the car stops at the end)

v = u +at

0 = 50 + 20t

20t = -50 m/s

a = -50/20 m/s

a = -2.5 m/s( retardation)

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Answer 2

Answer:

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