Homework Help: Physics

Posted by falcon306 on Sunday, July 17, 2011 at 4:19pm.

A 1300 kg car is traveling along a straight road at 20 m/s. Two seconds later its speed is 24 m/s. What is the magnitude of the net force acting on the car during this time?

I dont know what equation to use, and I keep getting stuck

Physics - Henry, Sunday, July 17, 2011 at 6:33pm
a = (Vf-Vo) / t = (24-20) / 2 = 2m/s^2.

Fn = ma = 1300 * 2 = 2600N.
Physics - falcon306, Sunday, July 17, 2011 at 7:39pm
Thank you!

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