Demonstration: This experiment shows that it is not possible to measure the weight of a body in free fall using a forcemeter.

Practical Activity 14-16

Demonstration: It may seem surprising that the motion of all objects falling freely under gravity is the same. Click here for...

Practical Activity 14-16

Demonstration: This is a fairly elementary demonstration, but it will help students to develop a ‘feel’ for a newton of force...

Practical Activity 14-16

Demonstration: American astronauts on the Moon repeated Galileo's classic experiment.

Practical Activity 14-16

Class practical: Gravitational force can act at a distance ; it shows little variation over short distances, but does vary...

Practical Activity 14-16

An object in free fall is said to be ‘weightless’ but is better described as ‘apparently weightless’. Questions about...

Teaching Guidance 14-16

The water stays inside the cup despite the huge hole! The cup and the water are falling at the same rate due to gravity so...

Enrichment Activity 5-11 11-14

Use these questions to test the pupils' understanding, by discussion or individual completion.

Diagnostic Questions 11-14

Falling, and perhaps also rising, are so common as occurrences that you'll perhaps need to make them a bit strange, to draw...

Classroom Activity 5-11

The purpose of this activity is to get pupils thinking and talking about where, and on what, forces might act in some everyday...

Classroom Activity 11-14

Ultracentrifuges are devices used to separate materials and can achieve accelerations of up to 1,000,000 times the...

Stories from Physics 11-14 14-16

The old riddle that asks whether a pound of feathers is heavier than a pound of lead is not as simple as it seems. Some...

Stories from Physics 11-14 14-16