A car mass of 1.2 x 10 kilograms starts from rest and attains a speed of 20 meters/seconds in 5 seconds. What net force acted on the car to cause that acceleration

Net force on the car=F=4.8 x 10³ N

Explanation:

mass of car = 1.2 x 10³ Kg

initial velocity = Vi=0

Final velocity = Vf = 20 m/s

time = t = 5 s

Using kinematic equation,

Vf = Vi + at

20 = 0 + a (5)

5 a=20

a = 20/5

a = 4 m/s²

Now force is given by F = ma

F = 1.2 x 10³ (4)

F=4.8 x 10³ N