This is аn оriginаl exаm questiоn by Prоf Kay Han. It is forbidden to photograph, upload, download, copy or share this problem with anyone, or to post it onto any website. An RV is tied up to a trailer. At first the trailer pulls gently on the RV but it doesn’t move.
This is аn оriginаl exаm questiоn by Prоf Kay Han. It is forbidden to photograph, upload, download, copy or share this problem with anyone, or to post it onto any website. Using the picture below to answer the question. When Maria swims to the end of the pool she wishes to increase her speed after turning around by pushing against the pool wall with force F. Her mass is m, and during her push the average water resistance is R. 1. Show the direction of the force Maria exerts on the wall. [ans1] 2. In what direction is the force that the wall exerts on Maria? [ans2] 3. In what direction is the water resistance? [ans3] 3. Calculate the Maria’s average acceleration if her legs push on the wall with a 320-N force, the water’s resistance force to her motion is 90 N, and her mass is 68 kg. [ans4]