Question

29. When a car driver travelling at a speed of 10 m/s applies brakes and brings the car to rest in 20 s, then the retardation will be​

Answer 1

0.5 m/s²

Explanation:

=> U (initial velocity) = 10 m/s

=> V (final velocity) = 0 m/s

=> t (time taken) = 20s

( The term retardation means negative acceleration)

=> a (acceleration) = (V – U) / t

=> a = 0 – 10 / 20

=> a = – 0.5 m/s²

Therefore, Retardation = 0.5 m/s²