AP Physics System Block Earth

Quiz
•
Physics
•
10th - 12th Grade
•
Hard
+5
Standards-aligned
Charles Martinez
FREE Resource
26 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Potential energy is defined as
Energy stored in the object
Energy of motion
Energy stored in the bonds of molecules
Heat energy
Tags
NGSS.MS-PS3-2
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A 4 kg block is pushed up an incline that makes a 300 angle with the horizontal, as shown in the figure. Once the block is pushed a distance of d=5.0 m up the incline, the block remains at rest. What is the approximate change in the gravitational potential energy of the block-Earth system when the block is held at rest compared to its original location at the bottom of the incline?
0 J
100 J
100 square root of 3
200J
Tags
NGSS.HS-PS3-1
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
The unit for energy and work is
J
N
m/s
m/s/s
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
An object of mass M is attached to a string of negligible mass and spun in a vertical circle of radius R, as shown in the figure above. As the object’s height increases, its speed decreases such that the object-Earth system’s total mechanical energy remains constant. By how much does the object’s kinetic energy decrease in moving from point O, the lowest point on the circle, to point P, the highest point on the circle?
Tags
NGSS.HS-PS3-1
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tags
NGSS.HS-PS3-1
NGSS.HS-PS3-2
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Tags
NGSS.MS-PS3-5
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
The surface of an incline is coated with an experimental substance that is intended to reduce the frictional force between a block and the surface of the incline. A 2 kg
block is placed at the top of the incline at a height of 1.8 m
, as shown in the figure. After the block is released from rest, the block slides down the incline and a motion detector at the bottom of the incline measures the block’s speed as 5.8m/s after the block is no longer on the incline. Which of the following claims is correct about the experimental substance?
The experimental substance reduced all the frictional force because all the gravitational potential energy of the Earth-block system at the top of the incline was converted into the kinetic energy of the block at the bottom of the incline.
The experimental substance did not reduce all the frictional force because some of the gravitational potential energy of the Earth-block system at the top of the incline was converted into nonmechanical energy.
The effectiveness of the experimental substance cannot be determined because the speed of the block at the bottom of the inline, as measured by the motion detector, indicates that the block has more energy at this location than the Earth-block system had at the top of the incline.The effectiveness of the experimental substance cannot be determined because the speed of the block at the bottom of the inline, as measured by the motion detector, indicates that the block has more energy at this location than the Earth-block system had at the top of the incline.
The effectiveness of the experimental substance cannot be determined without knowing the magnitude of the frictional force between the block and the incline before and after the experimental substance was applied to the incline.
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