Work Power Energy IGCSE
This quiz includes the topics on Work, Energy and Power. The quiz is consisting of 15 multiple-choice items, which are all conceptual. Time limit for the quiz is 15 minutes. Good luck.
- 1.Which of the following is not a unit for power?
- A.
Joule – second
- B.
Watt
- C.
Newton-meter per second
- D.
Horsepower
- 2.Car A has a mass of 1000 kg and a speed of 60 km/h, and car B has a mass of 2000 kg and a speed of 30 km/h. The kinetic energy of car A is _____.
- A.
Half that of car B
- B.
Equal that of car B
- C.
Twice that of car B
- D.
Four times that of car B
- 3.If an object has kinetic energy, then it also must have _____.
- A.
Speed
- B.
Impulse
- C.
Acceleration
- D.
Force
- 4.A feather and a coin are dropped in the air. Each falls with equal _____.
- A.
Momenta
- B.
Kinetic energies
- C.
Potential energy
- D.
None of the above
- 5.When a bullet is fired from a rifle, the force on the rifle is equal to the force on the bullet. However, the energy of the bullet is greater than the energy of the recoiling rifle because the _______.
- A.
Force on the bullet acts for a longer distance
- B.
Bullet's momentum is greater than that of the rifle
- C.
Force on the bullet acts for a longer time
- D.
The impulse of the bullet is more
- 6.An object that has kinetic energy must be _____.
- A.
Moving.
- B.
Falling.
- C.
At an elevated position.
- D.
At rest.
- 7.An object that has potential energy has this energy because of its _____.
- A.
Speed.
- B.
Acceleration.
- C.
Momentum.
- D.
Location.
- 8.An object is raised above the ground gaining a certain amount of potential energy. If the same object is raised twice as high it gains _____.
- A.
Four times as much potential energy.
- B.
Twice as much potential energy.
- C.
Half as much potential energy
- D.
Neither of these.
- 9.When an object is lifted 10 meters, it gains a certain amount of potential energy. If the same object is lifted 20 meters, its potential energy is ______.
- A.
Less.
- B.
The same
- C.
Twice as much.
- D.
Four times as much
- 10.Two identical arrows, one with twice the kinetic energy of the other, are fired into a hay bale. The faster arrow will penetrate _____.
- A.
The same distance as the slower arrow.
- B.
Twice as far as the slower arrow.
- C.
Four times as far as the slower arrow.
- D.
More than four times as far as the slower arrow.
- 11.A ball is projected into the air with 100 J of kinetic energy which is transformed to gravitational potential energy at the top of its trajectory. When it returns to its original level after encountering air resistance, its kinetic energy is _____.
- A.
Less than 100 J.
- B.
More than 100 J.
- C.
100 J.
- D.
Not enough information given.
- 12.Strictly speaking, a car will burn more gasoline if the car radio is turned on. This statement is _____.
- A.
Totally false.
- B.
True only if the car's engine is running.
- C.
True only if the car's engine is stopped.
- D.
Always true.
- 13.Two identical arrows, one with twice the speed of the other, are fired into a hay bale. The faster arrow will penetrate _____.
- A.
The same distance as the slower arrow.
- B.
Twice as far as the slower arrow.
- C.
Four times as far as the slower arrow.
- D.
More than four times as far as the slower arrow.
- 14.How many Joules of energy are in one kilowatt-hour?
- A.
1 J
- B.
60 J
- C.
60 kilojoules
- D.
3.6 megajoules
- 15.A feather and a coin dropped in a vacuum fall with equal _____.
- A.
Forces
- B.
Momenta
- C.
Accelerations
- D.
Kinetic energies
Questions: 12 | Attempts: 8301 | Last updated: Sep 30, 2020
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