Grade 11 · Science · Physics

11th grade Work: when a force does work worksheet

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Work: when a force does work

Grade 11 Science Worksheet

NameDate

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?
3.
A force acts at 90° to an object's motion. How much work does it do, Kira?
- None
- Negative F × d
- All of F × d
- Half of F × d
4.
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 52 J
- 60 J both times
- 60 J, then 30 J
- 30 J, then 60 J
5.
In the force-displacement graph, how much work does the push do, Milo?
- 24 J
- 80 J
- 40 J
- 5 J
6.
In the force-displacement graph, how much work is done squeezing the spring, Noah?
- 100 J
- 500 J
- 10 J
- 20 J
7.
In the force-displacement graph, how much work does the push do over the 4 m, Pia?
- 160 J
- 80 J
- 120 J
- 40 J
8.
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?
- 29.4 J
- 0 J, since the speed is steady
- 3 J
- 19.6 J
9.
During that same lift, how much work does gravity do on the box, Tala?
- +29.4 J
- −3 J
- −29.4 J
- 0 J
10.
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

Work: when a force does work. Every version has 10 questions, and the answer key prints on the second page.

I can find work, W = Fd cos θ, in joules, using the part of the force along the motion.
I can tell when no work is done. A force at right angles to the motion does none: a drone carrying a box level at a steady speed does no work on it. Neither does pushing a crate that doesn't move.
I can give work a sign: positive along the motion, negative against it (friction), zero at right angles. Gravity does −mgh going up and +mgh going down.
I can find work as the area under a force-displacement graph (rectangles, steps, and a spring's triangle, ½Fd). I know a frictionless ramp takes the same work as lifting.

Standard: supports HS-PS3-1

work: Energy moved by a force acting along a distance

joule (J): 1 newton acting over 1 meter

θ (angle): The angle between the force and the motion

negative work: Work by a force against the motion; it removes energy

force-displacement graph: Force plotted against distance; its area is the work

Your child added force and distance. Work is force × distance, in joules.

Your child used sine. With θ between the force and the motion, the part of the force along the motion is F cos θ.

Your child used the full force for the whole squeeze. A spring's force grows from zero, so the work is the triangle's area: ½ × F × d.

What is the most common mistake with work: when a force does work?

Your child added force and distance. Work is force × distance, in joules.

Are these 11th grade science worksheets free to print?

Yes. All 6 printable versions at each level are free to print, with the answer key, and no account is needed.

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