Homework Help: physics

Posted by belle on Tuesday, July 26, 2011 at 12:22am.

a car pulling a 1500-kg trailer produces an acceleration of 0.50m/s^2.
a)the frictional force in the wheels of the trailer is 125N. what force is the car exerting on the trailer?
b) what force is the trailer exerting on the car?

physics - drwls, Tuesday, July 26, 2011 at 4:48am
a) Fnet (on trailer) = M*a

= 1500*0.5 = 750 N
= Fcar - Fwheels
= Fcar - 125
Fcar = 875 N

b) -875 N (oppostite reaction)

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