Momentum & CollisionsWGU Exam
Command Center: OA Simulation Practice,
PA Rubric Execution Guide, Competency
Control & Smart Progress System (2026–
2027)
Description
The WGU Exam Command Center is a comprehensive,
system-based study resource designed for students at
Western Governors University (WGU) who want to take
full control of their learning process and approach
assessments with clarity, structure, and confidence. Built
specifically around WGU’s competency-based model, this
guide helps you shift from passive studying to active,
results-driven preparation.
Rather than relying on scattered notes or trial-and-error
studying, this resource functions as a central command
system—giving you the tools, structure, and strategy
needed to manage your course effectively, understand
expectations clearly, and perform consistently in both
,Objective Assessments (OA) and Performance
Assessments (PA).
1. Momentum is defined as:
A. mv²
B. mv
C. m/a
D. v/m
2. SI unit of momentum:
A. kg m/s
B. N
C. J
D. m/s²
3. Momentum is a:
A. Scalar
B. Vector
C. Constant
D. Unit
4. Impulse equals:
A. Force × time
B. Force × velocity
C. Mass × acceleration
D. Velocity/time
5. Impulse is equal to change in:
A. Velocity
B. Momentum
, C. Acceleration
D. Energy
6. Law of conservation of momentum applies when:
A. External force = 0
B. Internal force = 0
C. Velocity = 0
D. Mass = 0
7. Momentum is conserved in:
A. Closed system
B. Open system
C. Random system
D. Static system
8. In elastic collision, conserved quantity:
A. Momentum only
B. KE only
C. Both momentum & KE
D. Neither
9. In inelastic collision:
A. KE conserved
B. Momentum conserved only
C. Neither conserved
D. Both conserved
10. Perfectly inelastic collision means:
A. KE conserved
B. Bodies stick together
C. Momentum lost
D. Velocity zero
Command Center: OA Simulation Practice,
PA Rubric Execution Guide, Competency
Control & Smart Progress System (2026–
2027)
Description
The WGU Exam Command Center is a comprehensive,
system-based study resource designed for students at
Western Governors University (WGU) who want to take
full control of their learning process and approach
assessments with clarity, structure, and confidence. Built
specifically around WGU’s competency-based model, this
guide helps you shift from passive studying to active,
results-driven preparation.
Rather than relying on scattered notes or trial-and-error
studying, this resource functions as a central command
system—giving you the tools, structure, and strategy
needed to manage your course effectively, understand
expectations clearly, and perform consistently in both
,Objective Assessments (OA) and Performance
Assessments (PA).
1. Momentum is defined as:
A. mv²
B. mv
C. m/a
D. v/m
2. SI unit of momentum:
A. kg m/s
B. N
C. J
D. m/s²
3. Momentum is a:
A. Scalar
B. Vector
C. Constant
D. Unit
4. Impulse equals:
A. Force × time
B. Force × velocity
C. Mass × acceleration
D. Velocity/time
5. Impulse is equal to change in:
A. Velocity
B. Momentum
, C. Acceleration
D. Energy
6. Law of conservation of momentum applies when:
A. External force = 0
B. Internal force = 0
C. Velocity = 0
D. Mass = 0
7. Momentum is conserved in:
A. Closed system
B. Open system
C. Random system
D. Static system
8. In elastic collision, conserved quantity:
A. Momentum only
B. KE only
C. Both momentum & KE
D. Neither
9. In inelastic collision:
A. KE conserved
B. Momentum conserved only
C. Neither conserved
D. Both conserved
10. Perfectly inelastic collision means:
A. KE conserved
B. Bodies stick together
C. Momentum lost
D. Velocity zero
