Calculate the time required for a 6000.-Newton net force to stop a 1200.-kilogram car initially traveling at 10. M/s

Force = (mass) x (acceleration).

We know the force and the mass, so we can write

6,000 N = (1,200 kg) x (acceleration).

Divide each side by 1,200 kg:

Acceleration = 6000N/1200kg = 5 m/s².

That's the acceleration. The car's speed changes by 5 m/s each second

that the force acts on it. If the force pushes from behind, then the car goes

5 m/s faster every second. If the force pushes from in front, then the car

goes 5 m/s slower every second.

The car is moving at 10 m/s and we want to slow it down to zero m/s. So

the force has to push from the front, and it will take (10/5) = 2 seconds to

complete the job.