Question

Calculate the force required to impart a car of velocity 30 m/s in 10 sec starting from rest .The mass of car is 1500kg

Answer 1

u=0 (as the car starts from rest)
v=30
t=10
m=1500
v=u+at
30=0+a×10
30=10a
a=3
F=ma
F=1500×3
4500N

Answer 2

u=0
v=30m/s
t=10 sec
a=v-u/t
acceleration =3 metre per second square
F=m*a
4500 N