- #1
rwishka
- 16
- 0
Homework Statement
I promise - my last set of questions.
1. A hockey stick hits a puck on the ice. Identify an action-reaction pair, and compare the forces exerted by each object.
a. The stick exerts a force on the puck; the puck exerts a force on the stick.
b. The stick exerts a force on the puck; the puck exerts a force on the ice.
c. The puck exerts a force on the stick; the stick exerts a force on the ice.
d. The stick exerts a force on the ice; the ice exerts a force on the puck.
2. A leaf falls from a tree and lands on the sidewalk. Identify an action-reaction pair, and compare the forces exerted by each object.
a. The tree exerts a force on the leaf; the sidewalk exerts a force on the leaf.
b. The leaf exerts a force on the sidewalk; the sidewalk exerts a force on the leaf.
c. The leaf exerts a force on the tree; the sidewalk exerts a force on the leaf.
d. The leaf exerts a force on the sidewalk; the tree exerts a force on the leaf.
3. As a basketball player starts to jump for a rebound, the player begins to move upward faster and faster until his shoes leave the floor. During the time that the player is in contact with the floor, the force of the floor on the shoes is:
a. greater than the player's weight.
b. equal in magnitude and opposite in direction to the player's weight.
c. less than the player's weight.
d. zero
Homework Equations
None
The Attempt at a Solution
As you can see, I have trouble understanding these type of problems.
1. Would it be B, for isn't it like a chain reaction?
2. Would it be c, because the leaf will fall, and the sidewalk's force will make it stay for the time.
3. I think it would be either c or d, because if it was greater than the player's weight, he wouldn't jump, right?
I may be completely off, but I really need help with this! Please.