II. TESTING EXPERIMENT: INTERACTION BETWEEN DIFFERENT OBJECTS The goal of this e
ID: 1872870 • Letter: I
Question
II. TESTING EXPERIMENT: INTERACTION BETWEEN DIFFERENT OBJECTS The goal of this experiment is to test the hypothesis about the relationship between the force that an object A exerts on an object B to the force that the object B exerts on the object A. Available Equipment: Force probe sensors, dynamics track, dynamics carts, objects of diferent masses to put on carts, computer with Logger Pro. Brainstorm with your group members and make a list of possible experiments whose outcome can be predicted based on the hypothesis. Choose the two experiments that are the most appropriate. Perform each of the two experiments, following the appropriate steps for a testing experiment. Use the hypothesis that you devised and tested to predict which force is larger in each of the following situations: 1. A car is traveling down a highway just barely obeying the speed limit when a mosquito smashes into its windshield. The force the mosquito exerts on the windshield, or the force the windshield exerts on the mosquito. 2. A doctor taps vour knee with a Tavlor hammer to examine vour reflexes. The force the hammer exertsExplanation / Answer
1.
Both forces are equal since according to Newton's third law Force exerted by windshield on the mosquito is equal and opposite to the force exerted by the mosquito on the windshield.(Equal in magnitude but acting in opposite directions)
2.
Here again, the two force are equal by the same logic.
3.
Take an example of hitting hard on a concrete wall. Although the forces exerted by us on the wall is equal in magnitude to the force exerted by the wall on us, the wall doesn't seem to move at all while we are severely injured. It happens because of the huge difference in the mass of the wall and of us.Since acceleration is inversely proportional to mass(If Force remains same), more mass implies less acceleration. The second example is the fall of the ball towards the earth after throwing it in the air.Although the force exerted by the ball on earth is same in magnitude to the force exerted by the earth on the ball, we barely any moment of earth towards the ball while the ball quickly falls to earth. Again this happens due to the huge difference in the mass of the Earth and the ball.