Question

A car start from rest and acquire a velocity of 54 km per hour in 2 sec find acceleration and force if mass is 1000kg

Answer 1

Explanation:

initial velocity (u) =0

final velocity(v) =54×5/18=15 m/s

time(t) = 2sec

so acceleration will be

a=v-u/t

a=15-0/2

a=7.5 m/s2

force??

force=mass×accn

=1000kg×7.5 m/ s2

=7500 N