Force, mass and units

UNDERSTAND · PRACTISE · REVIEW

Write the relationship before inserting numbers. Use SI units consistently and check whether the answer is a force, acceleration or mass. A correct number without the right unit is incomplete.

A worked example

Try this learning routine

1. Read the explanation and say the idea in your own words.
2. Cover the worked answer and attempt a similar question.
3. Check each step, including units or word meaning.
4. Record one mistake and retry a new example later.

Independent practice

Choose one answer for each question and write a reason. These are foundation activities, not a complete board examination.

1. A 2 kg object accelerates at 3 m/s². Net force in N?

   • 7
   • 6
   • 9
   • 8

2. A 3 kg object accelerates at 3 m/s². Net force in N?

   • 12
   • 11
   • 9
   • 10

3. A 4 kg object accelerates at 3 m/s². Net force in N?

   • 15
   • 14
   • 12
   • 13

4. A 5 kg object accelerates at 3 m/s². Net force in N?

   • 17
   • 16
   • 15
   • 18

5. A 6 kg object accelerates at 3 m/s². Net force in N?

   • 18
   • 21
   • 19
   • 20

6. A 7 kg object accelerates at 3 m/s². Net force in N?

   • 23
   • 21
   • 22
   • 24

Your next step

Use the same idea in a fresh example. Bring the method and your questions to a discussion with TRICEF, rather than relying on a score alone.

Original TRICEF Academy practice material. Not an official board paper. Open the answer section before printing if you want the answer key included.