Draw a diagram to show the forces that act on a car as it travels along a level road at its top speed.

Imagine throwing a shuttlecock straight up in the air. Air resistance is more important for shuttlecocks than for a tennis ball. Air resistance always acts in the opposite direction to the velocity of an object. Draw diagrams to show the two forces, weight and air resistance, acting on the shuttlecock: As it moves upwards

Describe one 'Newton's third law pair' of forces involved in the following situations. In each case, state the object that each force acts on, the type of force and the direction of the force. You step on someone's toe.

Describe one 'Newton's third law pair' of forces involved in the following situations. In each case, state the object that each force acts on, the type of force and the direction of the force.

(b) A car hits a brick wall and comes to rest.

Describe one 'Newton's third law pair' of forces involved in the following situations. In each case, state the object that each force acts on, the type of force and the direction of the force.

A car slows down by applying the brakes.

Describe one 'Newton's third law pair' of forces involved in the following situations. In each case, state the object that each force acts on, the type of force and the direction of the force.You throw a ball upwards into the air.

Determine the base units of:

 Pressure $\left(=\frac{\text{ force }}{\text{ area }}\right)$

Determine the base units of:

Energy $\left(=\text{Force}\times \text{Distance}\right)$