By the end of this chapter you should be able to:

• Convert distance and time from one scale to another.

• Define the term 'force'.

• Distinguish between contact and non-contact forces.

• Describe the effect of balanced and unbalanced forces on an object.

• Name the four forces acting on moving objects.

• Use F= ma to solve simple force problems.

• Describe the relationships between mass and weight.

• Define friction and understand how it affects motion.

• Use v = Δd / Δt to calculate speed, distance and time.

• Draw and interpret distance-time graphs.

• Carry out a practical investigation with guidance.

• Define 'drag' and understand some basic aerodynamic principles.

• Explain how simple machines can be used to affect forces.