How It Works has teamed up with Science Shop to give you the chance to win a Physics Workshop science kit worth £39.99.
The kit contains over 300 pieces, including cogs, poles, bricks, plates, chains and a wind-up motor. With them, you can build 36 different models to help answer questions like: at what angle should you throw a ball to obtain the maximum distance? And why is it easier to balance on a bicycle that’s moving than one that’s stationary?
How to enter
To enter, all you have to do is answer the question below. The competition closes on Friday 17 May 2013.