Question

A car moves with a velocity of 72km/hr it is brought to rest in 10seconds find A,the velocity in m/s B,the retardation

Answer 1

Answer:

hey mate

Explanation:

ur ans gonna be..

Answer 2

Answer:

Explanation:

initial velocity(u) = 72 km/hr =72 * 5/18 = 20 m/s

time(t) is 10 seconds

final velocity(v)=0 m/s as the particle comes to rest

applying equation of motion

v=u+at

0=20+a(10)

by solving this we get

a = -2m/s^2, (i.e. retardation is 2m/s^2)