A ball sinks to the bottom of a pool and comes to rest at D. What appears to be the position of the ball as viewed by the man at the poolside?

A car, which has no brakes and is not in gear, is easily pushed on to a horizontal ramp. Its rear wheels are then raised as shown. The car is supported only by its free moving wheels.

The diagram shows a section through a hot water boiler.  As water is heated, the hot water is drawn off through the outlet at D. From which pipe, A, B, C, E, or F should cold water be introduced into the system?

A large lump of rock is travelling through space in a direction that will take it close by the sun before it continues on its way. What is its most likely direction after it has passed by the sun?

As the driving wheel D turns in the direction shown, and the belt turns the other wheels around, which wheel turns round the most times?

Steel cylinders are made so that each one has a large and small hole through the middle. In the drawing, six cylinders have been stacked on top of each other. To stop the cylinders from rolling on the smooth floor, they are wedged by heavy blocks at each side of the bottom row.  

If the heavy blocks were removed, what would be the position of each of the cylinders, A, B, C or D, when they stop rolling?

When F turns in the direction shown, which way does A turn?

A heavy metal bar is fixed inside a cardboard tube. When the tube is placed on the ramp, as shown, in which direction will the tube roll?