Motion and work rates

Recognise the model, justify the rule and solve independently.

Use $d=vt$ for motion at constant speed, with consistent units such as kilometres, hours and kilometres per hour.

Explain why a faster object closes the gap at the difference of the two speeds, and find the catch-up time.

Work out the distance a train must travel to pass a pole, a bridge or another train completely.

Explain why work rates add when several agents work together, while completion times do not.