9. A 1385-kg pickup truck hitched to a 453-kg trailer accelerates along a level road from a
stoplight at 0.75 m/s2 [forward]. Ignore friction
on the trailer and air resistance. Calculate
(a) the tension in the hitch a
(b) the force of static friction exerted by the road
on the pickup truck to propel it forward a
(c) the force the trailer exerts on the pickup
truck a