Problem Pictures
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PP2 CD-ROM cover

This picture is taken from Problem Pictures Themes, a CD-ROM of photographs with activities for mathematics teaching.

Bouncing ball

A rapidly flashing light freezes the motion of this bouncing ball.

Why does the path of the ball trace out a curve rather than a straight line? Why are the images of the ball closer together at the top of the picture? Try to estimate the rate at which the light was flashing.

Sketch a graph that shows the speed of this ball against time.


The photographs and screen images on this website are copyright and may not be reproduced without permission. Copyright Richard Phillips 2001/2007. Page updated 13 July 2005.