When a car driver travelling at a speed of 10 m/s applies brakes and brings the car to rest in 20s, then retardation will be:
A. +2 m/s2
B. -2 m/s2
C. -0.5 m/s2
D. +0.5 m/s2
Answer:D
When a car driver travelling at a speed of 10 m/s applies brakes and brings the car to rest in 20s, then retardation will be:
A. +2 m/s2 B. -2 m/s2 C. -0.5 m/s2 D. +0.5 m/s2