A physics TA pushes a 20.0 kg equipment cart at a constantvelocity for a distance of 28.0 m down the hall. The force sheexerts on the cart is directed at an angle 20.0° below thehorizontal, and the force of friction opposing the motion of thecart is 48.0 N. Determine the following. (a) the magnitude (in N)of the force exerted on the cart by the TA (b) the work done (in J)by the force the TA exerts on the cart (c) the work done (in J) bythe force of friction acting on the cart (d) the work done (in J)by the force of gravity acting on the cart
