A 1,175-kg car is pulling a 305-kg trailer. Together, the car and trailer have a

Question

A 1,175-kg car is pulling a 305-kg trailer. Together, the car and trailer have an acceleration of 2.30 m/s2 in the positive x-direction. Neglecting frictional forces on the trailer, determine the following. (Indicate the direction with the sign of your answer. Assume forward motion is along the positive x-axis and upwards is along the positive y-axis. Assume the trailer's weight is entirely supported by it's own tires. d) the resultant force exerted by the car on the road (magnitude AND direction)

Explanation / Answer

net force along y direction is zero, so

force exerted by the car on the road is

       F = m g

           = (1175 kg) ( 9.8 m/s2 )

           =11515 N

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