velocity away from the detector. You may need to give the cart a little push to
ID: 3278907 • Letter: V
Question
velocity away from the detector. You may need to give the cart a little push to get it rolling when it is correctly adjusted. This will probably take many tries. When the motion is nice and steady, and you are satisfied with your graphs, adjust the time, velocity and acceleration scales so that you graphs fill the axes. Sketch the velocity and acceleration neaty on the axes below. -2 -2 1.0 2.0 3.0 4.0 5.0 Time (seconds) Compare your graphs to those in Investigation 4 (Activity 3) for motion of the cart at a steady (constant) velocity on a level ramp. Are the graphs similar in shape? Would you expect them to be similar? Why or why not? (Q1) Questions What forces act on the cart as it rolls down the ramp at a constant speed? Describe each below. (Q2) For the cart on the tilted ramp, which force is equivalent to your steady push along the level ramp in Investigation 4? Is this force steady (constant)? Does this force act on the cart when the ramp is level? (Q3)Explanation / Answer
Questions
1. The shapes of the graphs are similiar, as in case 1, the velocity is increasing constantly ( a straight line with a +ve sl;ope)
whereas in case 2 the graph is a striagtht line with slight +ve slope ( increasing contantly)
2. When the cart rolls down the ramp with constant velocity, forces acting on it are
a. force of gravity
b. friciotnal force from the ramp
3. when cart is on the tilted ramp, the component of the gravity parallel to the ramp is equivalent to the contant push applied in the previous activitry
4. For same friciton and larger tilt, the accleration in the cart case will still be a straight line parallel to x axis except that it would have a higher magnitude
the velocity time graph will again will be a straight line but with higher slope
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