2. What is the equation to find the weight of an object?
W=mg
What unit do we use to measure weight?
Newtons

3. 2. If the mass of a rock is 4.85 kg, what is its weight on the moon?
W=m*g
4.85 kg X 1.6 N= N
1 kg 

4. 3. If a piece of metal has a mass of 623g what is its weight on Neptune?
W=m*g
0.623 kg X 11.7 N= N
1 kg 

5. 4. The mass of a man is 15750g what is his weight on Mars?
W=m*g
15.75 kg X 3.7N= N
1 kg 

6. 5. If a book has a mass of 4.0 pounds, what is its weight on Earth?
4.0 lb X 0.454kg= 1.816kg
1 lb
W=m*g
1.816 kg X 9.8N = N
1 kg

7. 6. The mass of a necklace is 165oz, what is its weight on Venus?
165 oz X g= g
1 oz
W=m*g
kg X 8.9 N= N
1 kg 

8. 7. The mass of a glass of water is 256oz, what is its weight on the moon?
256 oz X g= g
1 oz
W=m*g
kg X 1.6 N= N
1 kg 

9. 8. What is the equation to find the density of an object?
D=m/v
What unit do we use to measure density?
g/cm3 or g/ml

10. 9. If an object has a mass of 538. 02g and displaces 16
9. If an object has a mass of g and displaces 16.5 mL of water, what is the density? 16.5mL=16.5cm3
D= m v
D= g
16.5cm3
D=32.61g/cm3

11. 10. If an object has a mass of 74. 25 g and a volume of 10
10. If an object has a mass of g and a volume of 10.5 cm3, what is its density?
D= m v
D= g
10.5cm3
D=7.07g/cm3

12. 11. A sample of metal has a mass of 450. 6g and a volume of 120. 4 cm3
11. A sample of metal has a mass of 450.6g and a volume of cm3. What is its density?
D= m v
D= g
120.4cm3
D=3.74g/cm3

13. 12. A block of an unknown metal has a mass of 7621g
12. A block of an unknown metal has a mass of 7621g. It has a length of 3cm, a width of 15cm, and a height of 12cm. What is the density of the metal?
v= l*w*h v=3cm*15cm*12cm v=540cm3
D= m v
D= g
540cm3
D= 14.11g/cm3

14. 13. If an object has a volume of 25cm3 mass of 525g, what is its density?
D= m v
D= 525g
25cm3
D= 21g/cm3

15. 14. What is the density of an object with a volume of 647cm3 and a mass of 850kg?
D= m v
D= 850g
647cm3
D= 1.31g/cm3