Acar with a mass of 1.2 x 10^3 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? a.) 3.0 x 10^2 newton’s b.) 6.0 x 10^2 newton’s c.) 1.2 x 10^3 newton’s d.) 4.8 x 10^3 newton’s e.) 1.2 x 10^4 newton’s

The mass of the car [m] = 1.2×10^3 kg.

The initial speed of car[u]= 0 m/s

The final speed of car [v]= 20 m/s

We are asked to calculate the force required to increase the speed from 0 to 20 m/s.

The momentum of a substance is defined as product of mass and velocity.

Mathematically momentum p=m×v   [Here m is the mass]

From Newton's second law we know that-

                            [here t is the time]

                                   [ANS]

Hence the correct answer to the question is C.

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