From the Institute of Physics, this series of learning episodes explore work, energy and power. Students perform some useful experiments with trolleys, weights and pulleys. Students should have a simple understanding of energy, how it is transferred by a force and the idea of conservation of energy. In these...

In this learning episode from the Institute of Physics, students tackle practical work looking at the efficiency of a ramp to think of force as a mechanism by which energy is transferred from one body to another. The activities include: • discussing students' current understanding of force, gravity, energy and work...

In this learning episode, from the Institute of Physics, students look at the forces involved when one vehicle impacts another object. This can be used to illustrate the forces, acceleration and deceleration involved. It considers the effect of the distance over which a force acts rather than the time of action of...

This learning episode, from the Institute of Physics, looks at kinetic energy, work and velocity in relation to the braking distance of a vehicle. Two experiments are included, both of which connect work done in braking to the initial kinetic energy of the decelerating vehicle. The activities include: • discussion...

From the Institute of Physics, although concerned with conservation of mechanical energy, this episode extends the principle to its wider context in order to give the students a full appreciation of the overarching nature of the principle when they meet it in different situations. The activities include: •...

From the Institute of Physics, this resource is concerned with the conservation of mechanical energy and the principle in its wider context.

Students look at the meaning of power, undertake sample calculations and the measurement of human power.

Activities include:
• discussing the meaning of...

In this learning episode from the Institute of Physics, students develop their understanding of momentum through practical investigations and mathematical analysis.

There are three episodes in this topic:

Episode 220:  Momentum and...

Produced by the Institute of Physics, this learning episode introduces the concepts of momentum and its conservation. A series of activities include: • an introduction to the conservation of momentum • investigating the conservation of momentum • application of the conservation of momentum in simple cases •...

From the Institute of Physics, this learning episode extends the idea of conservation of momentum into elastic collisions, in which, because kinetic energy (KE) is conserved. Useful information can also be found by calculating the changes in KE of the colliding objects. The activities include: • introducing elastic...

This learning episode, from the Institute of Physics, uses demonstrations and worked examples to examine the forces involved in changing momentum. It introduces the concept of impulse.

The activities in the learning episode include:
* showing that impulse equals change in momentum
* a...

These resources, produced by the Institute of Physics, look at circular motion, which is frequently observed in nature. Once students have a grasp of the mechanics of linear motion in one or two dimensions, it is a natural extension to consider circular motion.

There are two learning episodes in this topic...

From the Institute of Physics, this learning episode introduce students to the importance of circular motion and the need for a centripetal force to keep an object moving along a circular path. The activities include: * observing circular motion * whirling bucket and centripetal force * discussing examples of...

This learning episode from the Institute of Physics, uses worked examples and discussion to help students gain an understanding of circular motion, including linear velocity, angular velocity and angular acceleration. The activities include: * discussing linear and angular velocity * calculating angular velocity *...

From the Institute of Physics, these resources focus on some important mechanical properties of materials. They provide a good opportunity for calculations using scientific notation as well as unit conversions.

The learning episodes in this series include:

 Episode 227:...

In this learning episode from the Institute of Physics, students use Hooke's law to demonstrate the strength and stiffness of materials when subject to linear tensile or compressive forces. The activities include: • recap of Hooke's law • explaining tension and extension in a variety of materials • explaining...