Question
Out in the street. Chris and Pat are playing hockey. Chris swings the hockey stick at the puck and WHACK! it flies towards the goal. During the collision the hockey stick exerts a force on the puck in the direction shown at right. Does the puck exert a force on the hockey stick during the collision ? If so, In the box at right, draw an arrow to indicate the direction of this force, and In the space below, compare the magnitude of the force on the puck by the hockey stick to the magnitude of the force on the hockey stick by the puck. If the puck does not exert a force on the hockey stick, state so explicitly. The refrigerator in Jan's kitchen was moved to clean the floor. Jan is now trying to push it back into place. For each of the two situations below, is the magnitude of the force that Jan exerts on the fridge greater than. less than. or equal to the magnitude of the force exerted on Jan by the fridge? Explain y our answer. Jan is pushing on the fridge but it just won't budge. Jan pushes with all her might and the fridge starts moving at a slow constant speed. Jan's friend Sue is sitting on a stool watching Jan struggle with the fridge and says: Hmmm, jan...unlike living things, non-living things don't always exert forces on things they touch. Take my stool here, for instance If I poke you with my stool, it would exert a force on you. When i am just sitting on it. it doesn't exert any force on me. Instead it acts like the floor and keeps me from falling. " Do you agree or disagree with Sue's reasoning about her stool? Explain.
Explanation / Answer
According to Newton
