AP (Advanced Placement) Physics(BC): Questions 80  84 of 921
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Question number: 80
» Force and Newton's Law of Motion
Question
How much energy is stored in a spring when it is compressed by an external force m from its rest position?
Choices
Choice (5)  Response  

a. 


b. 


c. 


d. 


e.  None of the above 

Question number: 81
» Kinematics in One and Two Dimensions
Question
A car starts its journey from rest point , with constant acceleration and reached at in . If after next 6 seconds, car reached at point ; then:
Choices
Choice (5)  Response  

a. 


b. 


c. 


d. 


e.  Question does not provide sufficient data or is vague 

Question number: 82
» Kinematics in One and Two Dimensions
Question
Two perpendicular forces, a force directed due north and a force directed due east, are exerted simultaneously on an object whose mass is . What is the magnitude of the resultant acceleration of the object in ?
Choices
Choice (5)  Response  

a.  0.70 

b.  1.4 

c.  3.5 

d.  155 

e.  Question does not provide sufficient data or is vague 

Question number: 83
» Gravitation and Circular Motion
Question
The weight of an object on the surface of Earth is . The radius of Earth is approximately . What would be the weight of the object if it were located above Earth’s surface?
Choices
Choice (5)  Response  

a. 


b. 


c. 


d. 


e.  All of the above 

Question number: 84
» Kinematics in One and Two Dimensions
Question
A baseball is hit so that it rises almost vertically into the air. An observer counts a total time of from the time the ball is hit until it reaches the level of the baseball bat again. What is the best estimate of the velocity of the ball as it left the baseball bat?
Choices
Choice (5)  Response  

a. 


b. 


c. 


d. 


e.  None of the above 
