Work: when a force does work
Grade 11 Science Worksheet
Circle the best answer, or write your answer on the line.
Ari pulls a wagon 4 m along level ground with 50 N at 60° above the ground. To the nearest tenth, how much work does the pull do?
Esme pulls a wagon 6 m along level ground with 25 N at 30° above the ground. To the nearest tenth, how much work does the pull do?
A pull acts at 60° above level ground on a sliding wagon. Which part of the pull does work, Jun?
- F cos 60°, along the ground
- F sin 60°, the upward part
- No part of it
- The whole pull
A force acts at 90° to an object's motion. How much work does it do, Kira?
- None
- All of F × d
- Negative F × d
- Half of F × d
A 30 N pull moves a cart 2 m, first straight along the motion, then at 60°. How much work is done each time, Luz?
- 60 J, then 30 J
- 60 J, then 52 J
- 60 J both times
- 30 J, then 60 J
In the force-displacement graph, how much work does the push do, Milo?
- 80 J
- 24 J
- 5 J
- 40 J
In the force-displacement graph, how much work is done squeezing the spring, Noah?
- 500 J
- 10 J
- 20 J
- 100 J
A drone lifts a 2 kg box 1.5 m straight up at a steady speed. With g = 9.8 m/s², how much work does the drone's pull do, Ren?
- 0 J, since the speed is steady
- 3 J
- 19.6 J
- 29.4 J
During that same lift, how much work does gravity do on the box, Tala?
- −29.4 J
- +29.4 J
- 0 J
- −3 J
The drone then lowers the same box 1.5 m at a steady speed. How much work does gravity do on it, Zee?
- −29.4 J
- +58.8 J
- +29.4 J
- 0 J