A motor vehicle is brought to rest from a speed of 15ms^-1 in 20 seconds. Calculate the retardation.

Bennypollo

3 years ago

The said retardation and the unit of the answer is m/s which is wrong

De sage

1 year ago

-a= v-u/t
retardation=?
v= 0
u=15m/s
t=20s
-a = 0-15/20
cross multiply
-20a =-15
therefore
a( retardation)
a=-15/-20
a= 0.75 m/s²