AP Physics System Block Earth

Quiz
•
Physics
•
11th Grade
•
Hard
+4
Standards-aligned
Charles Martinez
FREE Resource
15 questions
Show all answers
1.
MULTIPLE SELECT QUESTION
15 mins • 1 pt
2.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
A ball is dropped from rest and falls to the floor. The initial gravitational potential energy of the ball-Earth-floor system is 10 J. The ball then bounces back up to a height where the gravitational potential energy is 7 J. What was the mechanical energy of the ball-Earth-floor system the instant the ball left the floor?
0 J
3 J
7 J
10 J
Tags
NGSS.HS-PS3-1
NGSS.HS-PS3-2
3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Tags
NGSS.HS-PS3-1
NGSS.HS-PS3-2
4.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
infinity
Tags
NGSS.HS-PS2-4
5.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
A person holds a book at rest a few feet above a table. The person then lowers the book at a slow constant speed and places it on the table. Which of the following accurately describes the change in the total mechanical energy of the Earth-book system?
The total mechanical energy is unchanged, because there is no change in the book’s kinetic energy as it is lowered to the table.
The total mechanical energy is unchanged, because no work is done on the Earth-book system while the book is lowered.
The total mechanical energy decreases, because the person does positive work on the book by exerting a force that opposes the gravitational force.
The total mechanical energy decreases, because the person does negative work on the book by exerting a force on the book in the direction opposite to its displacement.
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
A rubber ball with mass 0.20 kg is dropped vertically from a height of 1.5 m above a floor. The ball bounces off of the floor, and during the bounce 0.60 J of energy is dissipated. What is the maximum height of the ball after the bounce?
0.30 m
0.90 m
1.2 m
1.5 m
Tags
NGSS.MS-PS3-1
NGSS.MS-PS3-2
NGSS.MS-PS3-5
7.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
A sled slides down a hill with friction between the sled and hill but negligible air resistance. Which of the following must be correct about the resulting change in energy of the sled-Earth system?
The sum of the kinetic energy and the gravitational potential energy changes by an amount equal to the energy dissipated by friction.
The gravitational potential energy decreases and the kinetic energy is constant.
The decrease in the gravitational potential energy is equal to the increase in kinetic energy.
The gravitational potential energy and the kinetic energy must both decrease.
Tags
NGSS.HS-PS3-1
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