Year 7 · Science · Forces · Lesson 1
Balanced and unbalanced forces
Forces as pushes and pulls in newtons, contact and non-contact forces, force diagrams, resultant forces, and what balanced and unbalanced forces do.
18-minute video lesson
Teaching, worked examples and 20 practice questions solved step by step.
Watch free for a monthWhat your child will learn
- Describe what forces do
- Classify contact and non-contact forces
- Calculate a resultant force
- Explain balanced and unbalanced forces
The method
- Arrows.
- Same: add.
- Opposite: subtract.
- Size + direction.
Key words: force, newton, resultant force, balanced, unbalanced, friction.
Worked examples
The first three practice questions from the lesson, with every step.
Question 1
What is a force?
- Step 1: P or P
Answer: a push or a pull
Question 2
What is the unit of force?
- Step 1: N
Answer: newton (N)
Question 3
What measures force?
- Step 1: Meter
Answer: a newtonmeter