# Physics Test 2

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1. Mass is
The number of atoms inside an object
2. Mass is measured in
Kg
3. Weight is
The pull or force due to gravity of the planet
4. Weight is measured in
Newtons / N
5. The gravity of the earth
10N/kg or 10 m/ s2
6. The gravity of the moon
1/6 of the earth or 1/6 x10 N/ kg or 1/6 x10 m/s2
7. The gravity of space
0 N/kg or 0 m/s2
8. The formula to find weight
mass x gravity
9. The formula to find mass
• Weight
• gravity
10. The formula to find gravity
• Weight
• mass
11. Hooke's law
There is always a direct proportion between force and length extention unless the object exceeds the elastic limit
12. How the extention is found
New length - original length
13. Makes a spring harder
Dense material, short length, smaller turns, thicker wire
14. Makes a spring softer
Not dense material, longer, larger turns, thinner wire
15. If an object obeys hooke's law
The graphs line is straight
16. If an object disobeys Hooke's law
The graphs line is curved
17. The object that holds everything up
Retort stand
18. Shows you the extention
Ruler/ scale
19. Shows you the new length
Pointer
20. The object that is added on to see new measurements