Speed and acceleration

problem
Don't be late

Age

11 to 14

Challenge level

Mary is driving to Birmingham Airport. Using her average speed for the entire journey, find how long her journey took.
problem
Four on the road

Age

14 to 16

Challenge level

Four vehicles travel along a road one afternoon. Can you make sense of the graphs showing their motion?
problem
Speeding boats

Age

14 to 16

Challenge level

Two boats travel up and down a lake. Can you picture where they will cross if you know how fast each boat is travelling?
problem
Dangerous driver?

Age

16 to 18

Challenge level

Was it possible that this dangerous driving penalty was issued in error?
problem
Thunder and lightning

Age

11 to 14

Challenge level

How far away was the lightning if the flash and the thunderclap were 6 seconds apart?
problem
Swimmers

Age

14 to 16

Challenge level

Swimmers in opposite directions cross at 20m and at 30m from each end of a swimming pool. How long is the pool ?
problem
Jumping gerbils

Age

14 to 16

Challenge level

A conveyor belt, with tins placed at regular intervals, is moving at a steady rate towards a labelling machine. A gerbil starts from the beginning of the belt and jumps from tin to tin.
problem
An average average speed

Age

14 to 16

Challenge level

My average speed for a journey was 50 mph, my return average speed of 70 mph. Why wasn't my average speed for the round trip 60mph ?
problem
Revolutions

Age

11 to 14

Challenge level

Jack and Jill run at different speeds in opposite directions around the maypole. How many times do they pass in the first minute?
problem
Motion sensor

Age

14 to 16

Challenge level

Looking at the graph - when was the person moving fastest? Slowest?