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August 3, 2015

Homework Help: physics

Posted by Maggie on Thursday, March 29, 2012 at 4:29pm.

Each of the four wheels of a car push on the road with a force of 4.0*10^3 N [down]. The driving force on the car is 8.0*10^3 N [W]. The fictional resistance on the car is 6.0*10^3 [E]. Calculate the following

A) the mass of the car
B) the net force on the car
C) the cars acceleration

The answers are
A) 1.6*10^3 kg
B) 2.0*10^3 N [W]
C) 1.2m/s^2

I just don't understand how to get these correct answers

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