Q4 of 100 Page 208

When a ball is dropped from a height, its speed increases gradually. Name the force which causes this change in speed.

Gravitational force


Every object in the universal exert a force on every other object . this force is known as the gravitational force.


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2

Why do the shape and size of a balloon change when filled with air or water?

 3

Name the quantity whose unit is 'Newton' (N).

 5

What is the unit of force?

 6

Give one example where force changes the shape of an object.