Your 'cq_1_17.1' 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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Assignment 17 Seed Question 1
A steel ball rolls down a ramp and collides with a marble, as in the video. The marble is slightly smaller and quite a bit less massive than the ball.
• If they both experienced the same force, which would have the greater acceleration?
answer/question/discussion: Since acceleration equals Fnet / mass, the object with the greater mass would have the least acceleration. This is true because they both have the same force but have a different mass, and the object with the greater mass would have a greater denominator and therefore a smaller acceleration. Thus, the marble would have the greater acceleration.
• If the forces were exerted during identical time intervals, which would have the greater change in velocity?
answer/question/discussion: We know that impulse equals the average force times the time interval, and that this is equal to the momentum, or the mass times the velocity of the object. Thus, mv= Fave’dt and If they each have identical forces (as stated before) as well as identical time intervals, then we should focus on the left side of the equation. We know that the marble has less mass than the steel ball, so that means that the marble would have greater velocity than the steel ball in order to balance the right side of the equation (where they are equal in both the quantities of Fave and ‘dt).
The conclusion of your argument is that the magnitude of the change in velocity will be greater for the small mass than for the large. The actual velocities depend on the situation.
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I spent about 15 mins on this assignment.
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&#Good responses. See my notes and let me know if you have questions. &#