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Testing the rate of falling to the mass of an object Theory Terminal Velocity Gravitational Force Hang something from a spring balance and you can measure the downward pull from the Earth. The pull is called the gravitational force. No one knows what causes this but several things are known about it: * All masses attract each other. * The greater the masses, the stronger the pull. * The closer the masses, the stronger the pull. On Earth, the acceleration of free fall is 10m/s On Earth, there is a gravitational force of 10 Newtons on every kilogram. These two facts are connected. You can use the Formula F=m x a to work out the acceleration of an object. 1kg a=f/m a=f/m 10N =10/1 =500/50 =10m/s (g) =10m/s (g) In each case, the acceleration is the same; g. So you can think of g: - as an acceleration of 10m/s - as a gravitational field strength of 10N/kg Terminal Speed as a skydiver falls, the air resistance increases as their...

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