Dropping a tennis ball. The ball doesn't just hang in the air
because an unbalanced force (gravity) pulls it toward the
ground. You can calculate the force with which it will hit
the ground based on its mass time times the acceleration of
gravity (2nd Law). It will bounce up because the floor will
push back with the opposite force with which it falls. (3rd
Law)
On 1/30/13, Newtons 3 laws wrote:
> Can you give me simple hands on activities to show Newtons
> 3 laws of motion? Something that can be done in 2 to 3
> minutes
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