Physics 110 Online PRE Lab 4 Newtons Laws PDF

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Physics 110 Online PRE Lab 4 Newtons Laws...

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Pre-Lab Questions (show your work): 1. Imagine you are in a car without a seat belt, travelling at a constant speed. Suddenly, you traffic light turns red, and you are forced to brake, and you find yourself lurching forward. Why is that so? Due to law of inertia, an object in motion in this case it’s you in the car stays in motion unless acted upon external force. Pushing the breaks applies the external force to quickly decelerate the car, but the opposite force caused by the break is weaker than the force of the moving car causing you to launch forward abruptly. You are no longer moving with the motion of the car once the breaks are applied.

2. A force F acts on a mass M, for some time interval T, giving it an initial speed v. If the same force acted on another mass 3M, what would be the initial speed of the new mass (in terms of v)?

Force x time = mass (v - vi) F xT = M (v - 0) Mv=3M * vi v= 3vi vi= Initial speed = v/3...