Force, mass and acceleration
Grade 8 Science Worksheet
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.
Milo's table shows three carts with the same net force. Which cart has the greatest acceleration?
- Cart P
- Cart R, since it has the most mass
- Cart Q, the middle mass
- Each the same, since the force is the same
Using the same table, what is cart Q's acceleration, Noah?
- 3 m/s²
- 192 m/s²
- 6 m/s², since it gets the same force as P
- 24 m/s²
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.
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
Tala looks at the results. Which conclusion do they support?
- The cart's mass changed each time
- More force gave more acceleration
- Force did not matter
- More force gave a higher fixed speed
Using the pattern, what acceleration would an 8 N pull give the same cart, Zee?
- 4 m/s²
- A steady speed of 4 m/s
- 3 m/s²
- 16 m/s²