Physics Problem

[Kain]

considering i am not 2 smart at these things i really need help. it's probably the easiest problem out there, but like i said, i'm a dumbass. here it is

A 1.2 tonne car (a laser) is accelerated from the lights at 1m/sec/sec. What unbalanced force do the wheels exert on the ground??

I thought it might be 1.2 x 10^3 but im not sure

Thanks

 

[James R]

F=ma

so the force on the car to make it accelerate is (1.2 x 10^3) x 1 = 1.2 x 10^3 N.

This force is applied by the ground to the wheels. There is an equal and opposite reaction force due to the wheels pushing on the ground, according to Newton's third law

 

[mukundpa]

Kain,
you are smart enough