Question

A truck traveling at 54km/h is slow down to 36km/h in10sec find the retardation

Answer 1

Solution:-

given by:-

》u = 54km/h = 54×5/18 = 15m/s

》v = 36km/h = 36×5/18 = 10m/s

》t = 10s

》retardation(a) =( v-u)/10

》 = (10-15)/10 = -5/10 = -0.5m/s^2

》bcoz retardation so value is negetive

》(restardation is 0.5m/s^2) ans

i hope its help

Answer 2

u=54km/h
=54*5/18
15m/s
v=36km/h
=36*5/18
10m/s
a=v-u/t
10-15/10
=-5/10
-5m/s^2