1. Launch Which of these has the greatest inertia?
(Silent)
Which of these has the greatest inertia?
A 50kg mass moving at 100 m/s2
A 100kg mass moving at 100 m/s2
A 5kg mass moving at 1000 m/s2
A 10kg mass moving at 2000 m/s2

2. Mass vs weight
spring-lab/mass-spring-lab_en.html
Demo essential question:
What can you conclude about mass and gravity?

3. Calculating mass and weight
Fw = m * g
Take 1 minute to solve this equation for m and then for g.

4. Example 1
A crate of mass 50 kg is at rest on a horizontal floor. What is the weight of the crate
G: U: E: S: S: 4

5. Example 2
What is the weight of a 40-kg woman on Earth?
G: U: E: S: S:

6. Practice 1
What is the weight of a 4.8-kg dog on Earth?
G: U: E: S: S:

7. Practice 2
A book has a weight of 20 Newtons on Earth. What is its mass?
G: U: E: S: S:

8. Challenge 1
An elevator of mass 400 kg has an occupant of mass 100 kg and is suspended from a cable.
a. What is the total mass of the elevator and occupant
b. What is the total weight of the elevator and occupant?

9. Gravity on the moon
1.624 m/s^2 (meters per second squared) 9

10. Challenge 2
What is the weight of a 20-kg chimpanzee on the moon

11. Challenge 3
An object has a weight of 100 N on Earth. What is its weight on the moon?

12. Gravity on Jupiter
23.12 m/s^2 (meters per second squared) 12

13. Challenge 4
What is the weight of a 20-kg chimpanzee on Jupiter

14. Homework HW: - Mass and weight sheet - all problems
(You need acceleration due to gravity on the moon and jupiter to answer all the questions)

15. Exit Ticket
1.On the surface of planet X, the acceleration due to gravity is 16 meters per second2. What is the weight of a 6.0-kilogram mass located on the surface of planet X?
A. 2.7 N
B. 59 N
C. 96 N
D. 940 N