Question

Exercises
A. Answer the following in not more than 20 words.
1. What do we do when we want to change the speed or direction of motion of a moving body?
2. What makes a moving ball come to rest in a while even if no force is applied?
3. What makes a ball thrown up into the air fall back to the ground?
4. Mention three types of forces which can act from a distance.
5. Mention three disadvantages of friction between the parts of a machine.
6. What is pressure? What is the SI unit of pressure?
7. Why is the cutting edge of a knife made sharp?
8. What makes a coaster placed over the rim of a glass of water stick even when you invert it?
9. What is the SI unit of force?
B. Answer the following in not more than 40 words.​

Answer 1

hey mate...

Explanation:

I will give you the shortest answer....

1st.. we can apply we can apply external force to change the direction of motion of moving body

2nd.. due to friction a moving ball come in rest

3rd.. due to gravitational force

4th.. Three Types of force are gravitational force .. magnetic force ..electrostatic force ..

6th ..force that is produced when you place ...and the SI unit of pressure is Pascal ..

7th..why the blunt knife is thick edge

9th... SI unit of force is Newton ...

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