1) Calvin throws a rock at Susie from his hideout in a tree 4.0 m above the lawn. The rock is thrown at a speed of 5.0 m/s and an angle of 30° BELOW the horizontal. Fortunately, for all parties involved, Calvin misses Susie and the rock hits

Classical Dynamics of Particles and Systems
5th Edition
ISBN:9780534408961
Author:Stephen T. Thornton, Jerry B. Marion
Publisher:Stephen T. Thornton, Jerry B. Marion
Chapter2: Newtonian Mechanics-single Particle
Section: Chapter Questions
Problem 2.17P: A strong softball player smacks the ball at a height of 0.7 m above home plate. The ball leaves the...
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1) Calvin throws a rock at Susie from his hideout in a tree 4.0 m above the lawn. The
rock is thrown at a speed of 5.0 m/s and an angle of 30° BELOW the
horizontal. Fortunately, for all parties involved, Calvin misses Susie and the rock hits
the ground. (whew!) How far from the base of the tree does the rock land?
2) A 500 g box is being pulled by a rope across a level surface. The rope is horizontal.
The tension in the rope is 10 N to the right, and there is a 7 N kinetic friction force
acting on the box.
Draw a free body diagram for the box.
What is the net force acting on the box in the x-direction?
What is the net force acting on the box in the y-direction?
C.
d. What is the acceleration of the box? (magnitude and direction)
e.
One of the forces on your free body diagram should be the normal force
(make sure it is there!). For the normal force, what is the object, and what is
the agent?
f.
Is there a Newton's third law force pair associated with the normal force
acting on the box?
a.
b.
g. If your answer to f was yes, describe the equal and opposite force by
answering these questions: What is the object, what is the agent, and what
kind of force is it?
Transcribed Image Text:1) Calvin throws a rock at Susie from his hideout in a tree 4.0 m above the lawn. The rock is thrown at a speed of 5.0 m/s and an angle of 30° BELOW the horizontal. Fortunately, for all parties involved, Calvin misses Susie and the rock hits the ground. (whew!) How far from the base of the tree does the rock land? 2) A 500 g box is being pulled by a rope across a level surface. The rope is horizontal. The tension in the rope is 10 N to the right, and there is a 7 N kinetic friction force acting on the box. Draw a free body diagram for the box. What is the net force acting on the box in the x-direction? What is the net force acting on the box in the y-direction? C. d. What is the acceleration of the box? (magnitude and direction) e. One of the forces on your free body diagram should be the normal force (make sure it is there!). For the normal force, what is the object, and what is the agent? f. Is there a Newton's third law force pair associated with the normal force acting on the box? a. b. g. If your answer to f was yes, describe the equal and opposite force by answering these questions: What is the object, what is the agent, and what kind of force is it?
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