Without gravity, we would fly off the spinning earth and
into the space. Gravity is a force of attraction that acts between any two
objects. The objects can be as large as galaxies or as small as sub atomic
particles. The strength of the gravity between two objects depends on their
masses and the distance between their centers. Objects with large masses exert
a strong force of gravity. Objects far apart attract each other weakly.
Gravity always acts towards the centre of Earth, defining
the downwards direction every point on the planet surface. Gravity pulls the
juggling ball towards the ground, slowing it as it rises, and speeding it up as
it falls. The ball also pulls on the Earth but the earth is so massive that the
ball’s gravity has no noticeable effect.
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