Speed and acceleration

  • Bike Ride
    problem

    Bike Ride

    Age
    7 to 11
    Challenge level
    Nirmala and Riki live 9 kilometres away from the nearest market. They both want to arrive at the market at exactly noon. What time should each of them start riding their bikes?
  • In Order
    problem

    In Order

    Age
    7 to 11
    Challenge level

    Can you rank these quantities in order? You may need to find out extra information or perform some experiments to justify your rankings.

  • Home Time
    problem

    Home Time

    Age
    7 to 11
    Challenge level

    Alice's mum needs to go to each child's house just once and then back home again. How many different routes are there? Use the information to find out how long each road is on the route she took.

  • The hare and the tortoise
    problem

    The Hare and the Tortoise

    Age
    7 to 11
    Challenge level

    In this version of the story of the hare and the tortoise, the race is 10 kilometres long. Can you work out how long the hare sleeps for using the information given?

  • Walk and Ride
    problem

    Walk and Ride

    Age
    7 to 14
    Challenge level

    How far have these students walked by the time the teacher's car reaches them after their bus broke down?

  • Small pepper seedlings in turquoise pots.
    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?

  • An Unhappy End
    problem

    An Unhappy End

    Age
    11 to 14
    Challenge level

    Two engines, at opposite ends of a single track railway line, set off towards one another just as a fly, sitting on the front of one of the engines, sets off flying along the railway line...

  • Small pepper seedlings in turquoise pots.
    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.

  • Speedy Sidney
    problem

    Speedy Sidney

    Age
    11 to 14
    Challenge level

    Two trains set off at the same time from each end of a single straight railway line. A very fast bee starts off in front of the first train and flies continuously back and forth between the two trains. How far does Sidney fly before he is squashed between the two trains?

  • John's train is on time
    problem

    John's Train Is on Time

    Age
    11 to 14
    Challenge level

    A train leaves on time. After it has gone 8 miles (at 33mph) the driver looks at his watch and sees that the hour hand is exactly over the minute hand. When did the train leave the station?

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