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GCSE Physics · key term
A push or pull on an object caused by its interaction with another object; measured in newtons (N).
Used by AQA, Edexcel and OCR
Specification 4.5.1.2 · Paper 2
Revise: Contact and non-contact forcesA force is a push or pull on an object caused by another object. A boot can push a football because the two touch. The Earth pulls the ball gravitationally even while it is in the air.
A push or pull on an object caused by an interaction with another object.
Specification 2.4, 2.15, 2.19, 8.5, 8.6, 9.1, 9.4, 12.10, 12.12, 12.13, 14.17P, 15.1 · Paper 1, Paper 2
A push or pull with both a magnitude and a direction; it is a vector.
Revise: Recalling Vector and Scalar QuantitiesWeight is the gravitational force acting on an object. Every force has a direction, so weight is a vector and is measured in newtons. Near Earth's surface, an object's weight acts towards the centre of Earth.
A push or pull that can change an object's velocity, measured in newtons (N).
A push or pull that can change an object's velocity; its unit is the newton, N.
A push or pull acting on an object, measured in newtons (N).
A push or pull arising from an interaction between two objects; it has a size and a direction.
A push or pull that acts on an object; force is a vector and is measured in newtons (N).
The push or pull experienced by an object, measured in newtons (N).
The push or pull experienced by a current-carrying conductor in a magnetic field.
A push or pull measured in newtons (N). Here it acts on a current-carrying conductor in a magnetic field.
A push or pull caused here by gas particles colliding with a surface and changing momentum.
A push or pull that can change an object's motion or shape.
Specification P2.2a, P2.2b, P2.2c, P2.2d, P2.2m, P2.3a, PAG P2 · Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
A push or pull arising from an interaction that can change an object's motion or shape.
Revise: InteractionsThe effect is described by a force: a push or pull that can change an object's motion or deform it. For example, a table supports a book, Earth attracts a falling object and a magnet can pull an iron object towards it.
A push or pull on an object caused by its interaction with another object; it is measured in newtons (N).
A push or pull caused by an interaction, measured in newtons (N); force is a vector quantity.
A force is a push or pull on an object, measured in newtons (N).
A push or pull arising from an interaction, measured in newtons (N).
A push or pull caused by an interaction between objects, measured in newtons (N).
A push or pull that can change an object’s motion or shape; it is measured in newtons (N).
Paper 1, Paper 2
A push or pull arising from an interaction between objects, measured in newtons (N).
Revise: ForcesA force does not exist on its own: it arises when two objects interact. During the interaction, each object exerts a force on the other. These two forces form an interaction pair.
A push or pull arising from an interaction and measured in newtons (N).
Identify the two interacting objects before naming the force. Whether they are touching determines whether it is a contact or non-contact force.
Air resistance is a contact force: the object interacts with the air around it.
In a force diagram, place each arrow on the object experiencing the force and label which object exerts it.
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