Grade 8 · Science

8th grade Force, mass and acceleration worksheet

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Force, mass and acceleration

Grade 8 Science Worksheet

NameDate

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

Ari pushes a 15 kg wagon with a net force of 30 N. What is its acceleration?
Read this first
Use this
Force arrow diagram, one dimension, arrows drawn to scale by size. Box A labeled 8 kg: net force 24 N pointing right.
Bo slides an 8 kg box of games with a net force of 24 N. What is its acceleration?
Esme pulls a 9 kg sled with a net force of 36 N. What is its acceleration?
Jun pushes a 10 kg wagon with 40 N; friction pulls back with 10 N. What is the acceleration?
Kira pushes a 20 kg shopping cart with 60 N against 20 N of friction. What is the acceleration?
Table (example data)
Each cart gets the same 24 N net force. Cart P 4 kg, cart Q 8 kg, cart R 12 kg.
6.
Milo's table shows three carts with the same net force. Which cart has the greatest acceleration?
- Each the same, since the force is the same
- Cart Q, the middle mass
- Cart P
- Cart R, since it has the most mass
7.
Cart R has three times cart P's mass. How does R's acceleration compare with P's, Pia?
- Three times as much
- The same
- One third as much
- Twice as much
Use this
Investigation card (test results). A teacher and the class pull a 2 kg cart with a spring scale. Changed: the pulling force (2 N, 4 N, 6 N). Measured: the cart's acceleration. Kept the same: the cart, the track. Results: 1 m/s², 2 m/s², 3 m/s².
8.
Ren reads the investigation card. What did the class change on purpose?
- The cart's top speed
- The track
- The pulling force
- The cart's mass
9.
Tala looks at the results. Which conclusion do they support?
- The cart's mass changed each time
- Force did not matter
- More force gave more acceleration
- More force gave a higher fixed speed
10.
Using the pattern, what acceleration would an 8 N pull give the same cart, Zee?
- 3 m/s²
- 16 m/s²
- 4 m/s²
- A steady speed of 4 m/s

8th grade Force, mass and acceleration worksheet – printable — Print: 1 2 3 4 5 6

About this worksheet

Force, mass and acceleration. Every version has 10 questions, and the answer key prints on the second page.

What your child will learn

I can use F = m × a to find a force, an acceleration or a mass, with units.
I can find the net force first when friction pushes back.
I can predict: same force on more mass gives less acceleration; more force on the same mass gives more.

Standard: MS-PS2-2

Words to know

acceleration: How quickly speed changes, in meters per second each second (m/s²)

mass: How much matter an object has, in kilograms (kg)

net force: All the forces on one object combined, in newtons (N)

F = m × a: Net force equals mass times acceleration

newton (N): The force that speeds up 1 kg by 1 m/s each second

Common mistakes

Your child divided where F = m × a needs multiplying (or the other way). Write F = m × a together and cover the letter you want to find.

Your child used one force instead of the net force.

Your child added forces that point opposite ways. Push a box while a friend pushes back: the box moves only with what is left over.

What to say

Ask: which way is each arrow pointing, and what is left after they cancel?

Questions parents ask

What is the most common mistake with force, mass and acceleration?

Your child divided where F = m × a needs multiplying (or the other way). Write F = m × a together and cover the letter you want to find.

Are these 8th 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.

More grade 8 science

See all grade 8 science

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