Question

a body is moving with a velocity of 12 metre per second and it comes to rest in 18 minutes what was the acceleration

Answer 1

(initial velocity)u= 12 m/s
(final velocity)v= 0 m/s
(time)t= 18 minutes= 1080s
acceleration(a) =?
a= v-u/t
a= 0-12/1080
a=-12/1080
a= -0.01
hence -ve sign indicate retardation