Newton's First Law
I can describe and explain how a resultant force can change the movement of objects.
Newton's First Law
I can describe and explain how a resultant force can change the movement of objects.
Lesson details
Key learning points
- Resultant forces make the movement of things change.
- Friction acts against the direction of movement of an object.
- An object will continue to move at a steady speed in a straight line unless a resultant force is acting.
Keywords
Stationary - A stationary object is not moving.
Resultant force - A resultant forces the sum of all forces acting on an object.
Frictional force - Frictional forces act between surfaces, to oppose the movement of an object.
Gravitational force - The gravitational force on an object pulls it downwards, towards Earth.
Common misconception
Pupils believe driving forces are needed to keep objects moving at constant speed.
Demonstrate that friction (and drag) bring objects to a stop, showing that different surfaces produce the forces that slow objects.
Equipment
Content guidance
- Risk assessment required - equipment
Supervision
Adult supervision required
Licence
This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).
Lesson video
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Starter quiz
6 Questions
Exit quiz
6 Questions
not moving
force between two surfaces in contact when one tries to move
the sum of the forces on an object accounting for direction
a force that pulls objects towards Earth
a change in speed or direction of movement
