1. Review for: Unit 4 – Newton’s Laws of Motion

2. #1 Newton’s first law of motion is called the law of ______.
Inertia
Acceleration
Interaction
Motion

3. #2 Newton’s second law of motion is called the law of ___.
Inertia
Acceleration
Interaction
Motion

4. #3 Newton’s third law of motion is called the law of ___.
Inertia
Acceleration
Interaction
Motion

5. #4 An object’s inertia is determined by its ____.
Weight
Acceleration
Force
Mass

6. #5 An object in motion will remain in motion and an object at rest will remain at rest unless ________.
An external force acts on it
The earth moves
It accelerates
Chuck Norris decides for it to change its motion

7. #6 A force causes ______.
Motion
Acceleration
Weight
Displacement

8. #7 In outer space, the net force needed to keep a satellite in uniform motion is _____.
Zero
Some number bigger than zero
Equal to its weight

9. #8 Neglecting air resistance, once a baseball is thrown horizontally its….
Horizontal motion is uniform
Vertical motion is accelerated
Neither A nor B
Both A and B

10. #9 In projectile motion, the object’s horizontal motion is uniform because _____.
There is no net external force action on the object horizontally
The object has inertia
Both A and B

11. #10 In projectile motion, the object’s vertical motion is accelerated because _____.
There is a net force acting vertically on the object (the force of gravity)
The object has inertia
The object seeks to be in its natural state (at rest on the ground)

12. #11 In projectile motion problems, the variable that both horizontal and vertical have in common is ____.
Distance
Time
Acceleration
Force

13. #12 A big rig truck hits a VW bug with a force of 2200N
#12 A big rig truck hits a VW bug with a force of 2200N. The truck decelerates a little because the car exerts a reaction force…
Much greater than 2200 N
Much less than 2200 N
Of exactly 2200 N
Of an unknown amount since we don’t know the mass of the car

14. #13 In space, an astronaut can more forward by using a swimming motion.
True
False
Depends on his mass

15. #14 When the net force on an object is zero, the object must be at rest.
True
False

16. #15 If you jump off the bleachers, you pull up on the earth with a force equal to your weight.
True
False

17. #16 A book weighing 53 N lies motionless on the table
#16 A book weighing 53 N lies motionless on the table. The net force on the book is…
54 N up
54 N down
0 N

18. #17 A bowling ball has more inertia than a marble because it takes up more space.
True
False

19. #18 According to Newton’s Second Law, as force increases acceleration _______.
Decreases
Stays the same

20. #19 According to Newton’s Second Law, as mass increases acceleration _______.
Decreases
Stays the same

21. #20 Newton’s 3rd Law always deals with ______ object(s) and _______ force(s).
One; one
One; two
Two; one
Two; two

22. Questions? Comments? Criticisms? Concerns? Complaints?