Posted by Tom on Sunday, March 3, 2013 at 1:01pm.
A truck of mass 13,100 kg is acted upon by a driving force of 8900 N. The motion is opposed by a frictional force of 2230 N. Find the acceleration.

physics  Dr. Jane, Sunday, March 3, 2013 at 1:04pm
Force = mass x acceleration.
Really, you need the net force. If friction works in the opposite direction, you have a net force of 89002230.
Use that value in the equation for force and 13,100 kg for mass. You can then solve for acceleration in m/sec/sec also written as m/sec^2
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