ENERGY AND MOMENTUM QUIZ: Test Your Knowledge and ability on Physics.
Energy and momentum are fundamental concepts in physics that explain motion, force, and interactions between objects. This quiz tests your understanding of kinetic energy, potential energy, conservation laws, and momentum in physical systems.
Energy And Momentum Quiz
1. Energy is defined as the ability to
A. Move objects
B. Do work
C. Apply force
D. Produce heat
2. The SI unit of energy is
A. Watt
B. Joule
C. Newton
D. Pascal
3. Kinetic energy is the energy possessed by an object due to its
A. Shape
B. Position
C. Motion
D. Size
4. The formula for kinetic energy is
A. mv
B. mv²
C. ½mv²
D. mgh
5. Potential energy is the energy an object has due to its
A. Motion
B. Temperature
C. Position
D. Speed
Energy And Momentum Quiz
6. Gravitational potential energy is given by
A. mv²
B. mgh
C. mgv
D. mh²
7. The SI unit of momentum is
A. kg/m²
B. kg·m/s
C. N·m
D. J/s
8. Momentum is the product of
A. Mass and speed
B. Force and mass
C. Speed and time
D. Force and distance
9. The formula for momentum is
A. p = mv
B. p = m/v
C. p = mv²
D. p = v/m
10. According to the law of conservation of energy, energy
A. Can be created
B. Can be destroyed
C. Can neither be created nor destroyed
D. Is always lost
Energy And Momentum Quiz
11. According to the law of conservation of momentum, total momentum
A. Always increases
B. Always decreases
C. Remains constant in an isolated system
D. Becomes zero
12. A moving object has momentum because it has
A. Shape
B. Color
C. Mass and velocity
D. Temperature
13. Which of the following has the greatest kinetic energy?
A. Small mass, small speed
B. Large mass, small speed
C. Small mass, high speed
D. Large mass, high speed
14. Work is done when a force causes an object to
A. Heat up
B. Change color
C. Move in the direction of the force
D. Expand
15. The SI unit of work is
A. Newton
B. Joule
C. Watt
D. Pascal
Energy And Momentum Quiz
16. Power is defined as the rate of
A. Doing work
B. Applying force
C. Gaining energy
D. Losing mass
17. The SI unit of power is
A. Joule
B. Newton
C. Watt
D. Ampere
18. An object at rest has
A. Maximum momentum
B. Zero momentum
C. Constant momentum
D. Negative momentum
19. In an elastic collision, both energy and momentum are
A. Lost
B. Increased
C. Conserved
D. Destroyed
20. When the speed of an object doubles, its kinetic energy becomes
A. Doubled
B. Tripled
C. Four times
D. Half
Energy And Momentum Quiz ANSWERS AND EXPLANATIONS
1. B – Energy is the ability to do work and cause physical change.
2. B – The joule is the standard SI unit used to measure energy.
3. C – Kinetic energy depends on the motion of an object.
4. C – Kinetic energy is calculated using KE = ½mv².
5. C – Potential energy depends on an object’s position or height.
6. B – Gravitational potential energy equals mgh near Earth’s surface.
7. B – Momentum is measured in kilogram meter per second (kg·m/s).
8. A – Momentum depends on both mass and velocity.
9. A – Momentum is calculated using p = mv.
10. C – Energy only changes form; it is never created or destroyed.
11. C – In a closed system, total momentum remains constant.
12. C – Momentum exists because an object has mass and moves.
13. D – Large mass and high speed produce the highest kinetic energy.
14. C – Work is done only when force causes movement.
15. B – The joule measures work and energy.
16. A – Power measures how fast work is done.
17. C – The watt is the SI unit of power.
18. B – An object at rest has zero velocity, so momentum is zero.
19. C – Elastic collisions conserve both energy and momentum.
20. C – Kinetic energy depends on speed squared, so it becomes four times.
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