Phy 121
Your 'cq_1_11.1' report has been received. Scroll down through the document to see any comments I might have inserted, and my final comment at the end.
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Answer the following based on Newton's Second Law:
• How much net force is required to accelerate a 12 kg mass at 3 m/s^2?
The net force in the problem would be 36 Newtons. The mass here was 12 kg and the acceleration was 3 m/s^2. F = m*a so here we have the Fnet = 12 * 3m/s^2.
• What would be the acceleration of a 4 kg mass subject to a net force of 20 Newtons?
To solve this equation, a = Fnet / mass. I would have to plug in the numbers to get the answer here. So the equation here will look like this: acceleration = 20 N / 4 kg, acceleration here is 5 m/s ^2.
• If you exert a force of 20 Newtons on a 10-kg object and it accelerates in the direction of your force at 1.5 m/s^2, then how do you know there are other forces acting on the object besides your own?
I guess that based on the acceleration, it would be safe to assume that there is something else exerting force on the object because it appears that from the formula there should be an answer of exactly 1 m/s^2 but instead it says 1.5 m/s^2. Since there is a difference of .5m/s^2
• What is the total of all those forces and in what direction does this total act?
I think that with all that is given, the total of all the forces the object needs more force on it to accelerate more.
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It took me 30 minutes to do this exercise.
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Very good answers.