Question

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

Answer 1

Answer:

u = 20m/s v = 0m/s t = 20s

$a = \frac{v - u}{t}$

$a = \frac{0 - 20}{20}$

$a = - 1 \frac{m}{ {s}^{2} }$