Objects can exert forces on each other when they interact.
The Table shows four forces.
Table
| Force | Contact force | Non-contact force |
|---|---|---|
| friction | ||
| magnetic force | ||
| normal contact force | ||
| gravitational force |
Complete the Table by putting a tick in the correct column for each force.
Two balloons are rubbed with a cloth. The balloons then push each other apart without touching.
Name the type of force between the balloons.
A magnet attracts a steel paper clip. The magnet exerts a force of 0.20 N on the paper clip.
What is the size of the force that the paper clip exerts on the magnet?
Choose your answer from the list.
0 N 0.10 N 0.20 N 0.40 N
50 exam-style questions on OCR GCSE Physics 2.2 Newton’s laws, covering 2.2.1 Interactions between objects, 2.2.2 Force pairs in interactions, 2.2.3 Forces as vectors, 2.2.4 Newton's first law, 2.2.5 Resolving forces with vector diagrams, 2.2.6 Forces acting on an isolated object, 2.2.7 Free body diagrams and resultant force, 2.2.8 Free body diagrams for balanced forces, 2.2.9 Newton's second law, 2.2.10 Inertia and inertial mass, 2.2.11 Momentum in collisions, 2.2.12 Relating force, mass, velocity and acceleration, 2.2.13 Work done by a force, 2.2.14 Work, stored energy and units of energy, 2.2.15 Power as the rate of energy transfer, 2.2.16 Newton's third law, and 2.2.17 Circular motion and changing velocity. Each one has a worked solution and a mark scheme showing where the marks go.