Wednesday, January 1310:12 AM
Demo with Data | College Physics (algebra-based) Macmillan Learning
Unit 9: Prelecture / Bridge / Problems /

## Bridge Set: Work-Energy Theorem 1

Bridge questions are designed to inform an instructor of students’ level of understanding before lecture as well as lead to discussion, review, or other activity. They “bridge” pre- lecture time to lecture time.

Work on box in accelerating truck

A box sits on the horizontal bed of a truck accelerating to the left as shown. Static friction between the box and the truck keeps the box from sliding around as the truck accelerates.

1) The work done on the box by the static friction force as the accelerating truck moves a distance D to the left is

a) positive.

b) zero.

c) negative.

d) dependent on the speed of the truck.

A

Students first answer a question designed to be either open-ended, address a typical misconception, or otherwise lead to further discussion. The correct answer is not revealed until after the due date.

C

D

B

When pasting the graph into PowerPoint, make sure to Paste as Picture
(or Paste Special > Bitmap for older versions of PPT).

Survey Question

2) Briefly explain your choice for the above question.

Students then must explain the rationale behind their answer, allowing the instructor a deep level of insight into their understanding

### Problems

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Bridge

Bridge

Bridge

Bridge

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