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Course: AP PHYSICS 1
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AP PHYSICS 1

1. Kinematics

0/29

2. Force and Translational Dynamics

0/73

3. Work, Energy, and Power

0/31

4. Linear Momentum

0/29

5. Torque and Rotational Dynamics

0/37

6. Energy and Momentum of Rotating Systems

0/27

7. Oscillations

0/21

8. Fluids

0/30
Quiz

2.1.2 Center of Mass – Check yourself

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  • Questions count: 6
  • Passing grade: B+
  • Time limit: 10 minutes
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1.
The center of mass of two masses lies:
midway between them always
at the lighter mass
closer to the heavier mass
outside the line joining them
2.
Masses 1.0 kg at x = 0 and 3.0 kg at x = 4.0 m. xcm =
2.0 m
1.0 m
4.0 m
3.0 m
3.
A shell explodes in mid-air. Ignoring air resistance, the center of mass of the fragments:
continues along the original parabola
stops at the explosion point
moves straight up
moves along the biggest fragment's path
4.
The center of mass of a uniform rectangular plate is at:
one of its corners
the intersection of its diagonals
the midpoint of a long edge
any point on the edge
5.
An object tips over when its center of mass:
is at its lowest point
is inside its base
is outside its base of support
is at the geometric center
6.
Two skaters at rest on ice push apart. The velocity of their center of mass is:
toward the heavier skater
toward the lighter skater
dependent on how hard they push
zero
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Part of 2. Force and Translational Dynamics — see every lesson and quiz in this unit.
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