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course phy 201
Report your counts for the five trials with the toy car going in the first direction in the first line below, separated by commas. Report you counts for the five trials with car going in the opposite direction in the second line below, separated by commas. 1.3 seconds, 42 cm
1.6 seconds, 58cm
.7 second, 40cm
1.4 seconds, 51 cm
.5 second, 22 cm
1.4 seconds, 52 cm
1.1 seconds, 36 cm
1 second, 33 cm
1.3 seconds, 42 cm
1.2 seconds, 45 cm
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Report the five resulting accelerations for the first direction in the first line below, separated by commas, and use the same format to report in the second line the five for the second direcion. Starting in the third line show the details of how you found one of your accelerations.
49.69, 45.31, 163.25, 52.02,88
53.05,58.43,66,49.69,31.25
First I Vave=‘dx/’ dt then multiply that by 2 to give me the initial velocity. Then a=‘dv/’ dt to give you acceleration.
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How far from the lower end of the ramps did you have to position the two balls in order to synchronize their consecutive time intervals with the time interval for the third ball released from rest at the top of the third ramp?
6 cm
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You didn't time the intervals for either trial. Suppose that the ball on the third ramp required 3 seconds to travel the 30-cm length of that ramp. What was the acceleration of that ball? Report the acceleration in the first line. Explain how you found it starting in the second line.
a=6.66
Ave=30/3=10
Vo=20
a=20/3=6.66
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Assuming the 3-second interval for the ball on the third ramp, what was the time interval for ball released on the first ramp, and what was the resulting acceleration? Report the acceleration in the first line, and explain how you calculated it starting in the second line.
a=6.66
Ave=30/3=10 this is vAve for motion down the 30-cm ramp; it doesn't apply to the ball traveling 6 cm from rest.
Vo=20
a=20/3=6.66
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Are your two results for the accelerations reasonably consistent? Why would you or would you not expect them to be so?
Yes because the length was the same.
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Are your results in any way relevant to the problem of ordering v0, vf, `dv, v_mid_x, v_mid_t and vAve? If so, what conclusions can you draw?
Yes. Because you can find all the values
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Good overall, but you've got errors in the later questions.
&#Please see my notes and submit a copy of this document with revisions and/or questions, and mark your insertions with &&&& (please mark each insertion at the beginning and at the end).
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