Tutorial 4 Section Name Counterintuitive ideas: Newton\'s third law The main poi

Question

Tutorial 4 Section Name Counterintuitive ideas: Newton's third law The main point of this tutorial is helping you learn more strategies for learning physics concepts that seem to defy common sense. I. Newton's third law and common sense According to Newton's third law, when two objects interact, The force exerted by object A on object B is equal in strength (but opposite in direction to the force exerted by object B on object A Often, this law makes perfect sense. But in some cases, it seems not Consider a heavy truck ramming into a parked, unoccupied car A. (Work together) According to common sense, which force (i either is larger during the collision: the force exerted by the truck on the car, or the force exerted by the car on the truck? Explain the intuitive reasoning. B. (Work together) e asked this question of many students, and a typical response goes like this Intuitively, the car reacts more during the collision. (You'd rather be riding in the truck!) So the car feels the bigger force. Is your group's explanation in part A similar to or different from this? Explain C. (Work together) According to Newton's third law, which of those forces (if either is bigger? D. Experiment. Is this a case where Newton's third law doesn't apply? At the front of the room, the TA has set up an experiment that simulates a truck ramming a car. Go do the experiment and record the results here. You can also test whether Newton's third law holds for other collisions.

Explanation / Answer

A. force by truck on car = force by car on truck . this can be explained on the basis of newton's third law which states that if one object exert some force on other object, the same force is exerted by other object on the first object.

B.

it is different since our group states that the two forces would be equal and opposite.

C.

niether of the force is biggere since they are actually equal in magnitude to each other.

D.

the newton;s third law must hold in this situation

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