(Systems in Action) Question 1: Explain the different between force and work

Question 2: In what three ways can a machine make work easier?

Question 3: What is a mechanical system?

Question 4: Identify six simple machines and give an example for each.
1 )
2 )
3 )
4 )
5 )
6 )

Question 6: Define “increased productivity” and give an example of its negative impact on our world.

Question 7: Describe the difference between mechanical advantage and ideal mechanical advantage. Which is better?

Question 8: Johnny pushes a wall with force of 75N for one hour. Is there work being done? Explain.

Question 9: If the earths gravitational field is 9.8N/kg, what is the force of gravity on a 5-kg mass?

Question 10: Michelle uses a force of 50N to push a table 2.5m across the floor. How much work did Michelle do on the table?

Question 11: Grant uses a force of 100N to push a table 3m across the floor. How much work did grant do on the table?