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 - Challenge Me

NameDate

Circle the best answer, or write your answer on the line.

Squeezing a spring launcher, the force rises steadily from 0 to 40 N over 0.5 m. How much work is done, Ari?
Squeezing a spring launcher, the force rises steadily from 0 to 60 N over 0.3 m. How much work is done, Bo?
Squeezing a spring launcher, the force rises steadily from 0 to 120 N over 0.25 m. How much work is done, Esme?
4.
In the energy bar chart, how much kinetic energy does the box have after, Jun?
- 30 J
- 130 J
- 70 J
- 100 J
5.
In the energy bar chart, what is the net work done on the box, Kira?
Use the picture in question 4.
- 100 J
- 70 J
- 130 J, adding both
- −30 J
6.
In the energy bar chart, where did the 30 J taken by friction go, Luz?
Use the picture in question 4.
- Into the box's kinetic energy
- Into thermal energy, warming the floor and box
- Into gravitational energy
- It was destroyed
7.
Milo says a drone hovering while holding a box does work on the box. Agree or disagree?
- Agree: work can't be negative, so it must be positive
- Disagree: the box doesn't move
- Agree: the upward part is F sin θ
- Agree: any force does work
8.
Noah says friction does positive work on a sliding box. Agree or disagree?
- Agree: work is positive for any force
- Disagree: friction does negative work
- Agree: any force does work
- Agree: use F sin θ for friction
9.
With no friction, how does the work to push a box up a ramp compare with lifting it straight to the same height, Ren?
- Lifting takes no work
- The ramp takes more work
- It is the same
- The ramp takes less work
10.
Why does a ramp make it easier to raise a box, Tala?
- It needs less work
- It makes the box lighter
- It removes gravity
- It needs less force, over a longer distance

11th grade Work: when a force does work worksheet – printable — Print: 1 2 3 4 5 6

About this worksheet

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

What your child will learn

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

Words to know

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

Common mistakes

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.

Questions parents ask

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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