Question

A car with a mass of 1.2 × 10^3 kilograms starts from rest and attains a speed of 20 meters/second in 5 seconds. What net force acted on the car to cause that acceleration?
A: 3.0 * 10^2
B: 6.0 * 10^2
C: 1.2 * 10^3
D: 4.8 * 10^3
E: 1.2 * 10^4

Answer 1

For the net force you have to use
\[\sum_{?}^{?}F = ma\]

Where a=V/t

Answer 2

thank u :)