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3.
Drop a small stone and a piece of paper from the same height at the
same time. Observe closely the motion of the stone and the paper
as they fall. Which of them reached the ground first? Why did not the
other one reach the ground at the same time as the first?
4.
What is the importance of friction in our daily life?
5. Why do we need gravity?​

Sagot :

Kayceekimidn

Answer:

4.Friction is what holds your shoe to the ground. The friction present on the ice is very little, this is the reason why it is hard to walk on the slippery surface of the ice. Writing – A frictional force is created when the tip of the pen comes in contact with the surface of the paper.

5.Gravity is very important to us. ... The sun's gravity keeps Earth in orbit around it, keeping us at a comfortable distance to enjoy the sun's light and warmth. It holds down our atmosphere and the air we need to breathe. Gravity is what holds our world together.

Explanation:

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