Can you explain what is happening and account for the values being
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 ?
An environment that simulates a protractor carrying a right- angled
triangle of unit hypotenuse.
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.
Swimmers in opposite directions cross at 20m and at 30m from each
end of a swimming pool. How long is the pool ?
How high will a ball taking a million seconds to fall travel?
Can you work out the natural time scale for the universe?
At what positions and speeds can the bomb be dropped to destroy the
How fast would you have to throw a ball upwards so that it would
Can you work out which of the equations models a bouncing bomb?
Will you be able to hit the target?
Follow in the steps of Newton and find the path that the earth
follows around the sun.
A simplified account of special relativity and the twins paradox.
Two sudokus in one. Challenge yourself to make the necessary