Force, Mass and Acceleration Practice

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WALT: We Are Learning To use the equation F = m(×)a to calculate force, mass and acceleration.

• I can identify the correct values for force, mass and acceleration.

• I can rearrange F = ma to find an unknown value.

• I can show clear working and include the correct unit: newtons (N), kilograms (kg) or metres per second squared (m/s²).

Key equations: F = m(×)a

m = F ÷ a a = F ÷ m

1. A 4 kg trolley accelerates at 3 m/s². Calculate the force acting on it.

2. A 8 kg object accelerates at 2.5 m/s². Calculate the force.

3. A 1,200 kg car accelerates at 0.5 m/s². Calculate the resultant force.

4. A force of 45 N acts on a 9 kg object. Calculate its acceleration.

5. A 72 N force acts on a 12 kg box. Calculate the acceleration.

6. A net force of 150 N gives a trolley an acceleration of 6 m/s². Calculate the trolley’s mass.

7. An object accelerates at 3 m/s² when a force of 18 N acts on it. Calculate its mass.

8. A 96 N force produces an acceleration of 4 m/s². Calculate the mass.

9. A 250 kg vehicle experiences a force of 10 N. Calculate its acceleration.

10. A 2.5 kg ball accelerates at 4 m/s². Calculate the force.

11. A 0.75 kg object accelerates at 8 m/s². Calculate the force.

12. A 500 N force acts on a 20 kg crate. Calculate the acceleration.

13. A 60 kg cyclist accelerates at 1.5 m/s². Calculate the resultant force.

14. A force of 84 N causes an acceleration of 7 m/s². Calculate the mass.

15. A 2.4 kg model rocket accelerates at 2.5 m/s². Calculate the force.

Choose Questions 1, 6 and 10. Describe what happens to the answer if the acceleration doubles while the mass stays the same.

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