Download Chapter 6 Topics - JBHA-Sci-US-tri3

Chapter 6 Topics
Name ________________________________ Date _________
1. (6.1) When 2 objects are interacting
such as you pushing against a wall, What is
pushing on what?
2. (6.1) In the case of you leaning on the
wall, how many objects are involved and
how many forces are involved?
3. (6.1) What is Newton’s third law
sometimes called?
4. (6.2) What does Newton’s Third Law
state?
5. (6.2) Does it matter which force is the
action force and which is the reaction?
6. (6.2) Does one force come before the
other, or do they both happen at the same
time?
7. (6.2) Can the action force exist without
the reaction force?
8. (6.2) Do airplane engines have force?
9. (6.2) As a person paddles a canoe
through the water, strictly speaking, what
is the object and force that is moving the
canoe?
10. (6.3) What is the first step in
identifying the action and reaction forces in
a force pair interaction?
11. (6.3) What are the action and reaction
forces in the case of a falling boulder?
12. (6.3) In the case of the falling boulder
how many objects are there and how many
forces occur and do the forces have equal
strength?
13. (6.3) Do the forces on the falling
boulder act on one object or two?
14. If the action is a bow string acting on
an arrow, identify the reaction force.
15. (6.4) When you jump up, the world
really does recoil downward. Why can’t
this motion of the world be noticed?
16. (6.4)When a cannon is fired, how does
the size of the force of the cannon on the
cannonball compare with the force of the
cannonball on the cannon? How does the
acceleration of the cannon compare with
that of the cannonball? Explain
17. (6.4) how can a rocket be propelled
above the atmosphere where there is not air
to “push against”?
18. (6.4)How do airplanes move upward?
19. (6.5)Why don’t action reaction forces
cancel each other out like in the example of
a bridge in equilibrium holding its load?
Explain
20. (6.6) In the horse and cart system what
is the force that makes the cart move if the
horse and cart are pulling on each other
with equal force?
21. (6.7) Why can’t you hit a feather in
midair with a force of 200 N?
22. If you are stranded in the middle of a
frozen lake whose surface is perfectly
frictionless and brought with you a chicken
sandwich, how could you use it and
Newton’s Third Law to get back to shore?
23. In the supermarket you return a cart to
the cart area. You stand still and push the
cart towards the other carts. You’ve just
learned that the cart pushes back on you
too, according to Newton’s third law.
a.
Explain why the cart moves and you
do not. Consider all the forces acting
on you and on the cart.
b.
Which object is in equilibrium, you or
the cart?