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Quiz 3 Report 9/22/2017

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Quiz 3 Report 9/22/2017

1. Summary

0 0

1 1

3

5

4 4

0 1 2 3 4 5 6

0-3 3-4 4-5 5-6 6-7 7-8 8-9 9-10

Number of Students

Grade

Quiz 3 Grade Distribution

7.96 8.31

7.59

6.11

8.41

1.31 0.93 1.3

2.17 1.48

0.00 1.00 2.00 3.00 4.00 5.00 6.00 7.00 8.00 9.00 10.00

2017 2016 2015 2014 2013

Grade

Year

Quiz 3 Comparison with Previous Years

Average Standard Deviation Average Over 2013-2017

Total number of students 18

Attended 18

Missed 0

Average grade 7.96

Standard deviation of grades 1.31

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2 2. Comments

• Many students neglected the pressure force when calculating the x-component of the bolt force

• Many students made mistakes when calculating momentum fluxes (e.g. wrong sign or missing cos θ)

• Many students made mistakes when calculating relative velocities for the calculation of the plate force

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