Practice test

Motion, force and gravitation (laws) - Test Set 2

Review 20 exam-focused questions with detailed explanations, then start the interactive test when you are ready.

20 questions

Questions and explanations

  1. Question 1

    Which of the following laws represented by the formula T2 ∝ R3, compares the orbital period and radius of the orbit of a planet with that of other planets?
    1. Hubble’s Law
    2. Copernicus’s Law
    3. Kepler’s Third Law
    4. Bragg’s Law
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  2. Question 2

    Who among the following is credited with postulating three laws of planetary motion?
    1. Isaac Newton
    2. Tycho Brahe
    3. Galileo Galilei
    4. Johannes Kepler
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  3. Question 3

    Who was the first to use the term ‘horsepower’ that refers to the power produced by an engine?
    1. James Watt
    2. Amedeo Avogadro
    3. John Dalton
    4. Albert Einstein
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  4. Question 4

    What is the metric unit of pressure that is equal to 0.986923 atm?
    1. Yard
    2. Quart
    3. Bar
    4. Gallon
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  5. Question 5

    The relation between Atm and Bar is:
    1. 1 atm = 105 bar
    2. 1 atm = 1.013 × 105 bar
    3. 1 atm = 1 bar
    4. 1 atm = 1.013 bar
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  6. Question 6

    The suitability of post tensioning is good for:
    1. longs spans
    2. end spans
    3. break spans
    4. edge spans
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  7. Question 7

    An object is thrown upwards. At the highest point of its trajectory.
    Its:
    1. potential energy is maximum.
    2. both kinetic and potential energy are maximum.
    3. kinetic energy is maximum.
    4. both kinetic and potential energy are zero.
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  8. Question 8

    With what do you divide thrust in a liquid to obtain the value of pressure?
    1. Volume
    2. Area
    3. Density
    4. Mass
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  9. Question 9

    What kind of energy is associated with falling coconuts, speeding cars, rolling stones and flying aircraft?
    1. Potential energy
    2. Kinetic Energy
    3. Radiant energy
    4. Elastic energy
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  10. Question 10

    If 7 N force is applied on a brick and it moves through 5 m, then what will be the work done?
    1. 25 J
    2. 40 J
    3. 35 J
    4. 35 Erg
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  11. Question 11

    When one stone is thrown upwards, what type of energy conversion would occur?
    1. Kinetic energy would change to mechanical energy.
    2. Potential energy would change to gravitational energy.
    3. Mechanical energy would change to kinetic energy.
    4. Kinetic energy would change to gravitational potential energy.
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  12. Question 12

    What type of energy conversion takes place in a battery?
    1. chemical energy into light energy
    2. chemical energy into electrical energy
    3. mechanical energy into chemical energy
    4. chemical energy into sound energy
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  13. Question 13

    The English physicist James Prescott Joule outlined the basis of the ______ principle of conservation.
    1. phenomenon of gravitation
    2. theory of vibrating receptacle
    3. concept of diffusion of gases
    4. principle of conservation
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  14. Question 14

    Which of the following is an example of gravitational potential energy?
    1. Moving car
    2. Bullet fired from a gun
    3. Water that is behind a dam
    4. Foot kicking a ball
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  15. Question 15

    What is the commercial unit of electric energy?
    1. Watt-hour
    2. Kilowatt hour
    3. Electron-volt
    4. Newton
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  16. Question 16

    Which of the following is NOT a unit of energy?
    1. Calorie
    2. Joule
    3. Kilowatt hour
    4. Newton
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  17. Question 17

    Which of the following two quantities have the same dimensions?
    1. Power and radius of circular motion
    2. Work and angular displacement
    3. Work and torque
    4. Power and moment of inertia
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  18. Question 18

    Who discovered the laws of levers and pulleys, which allow us to move heavy objects using small forces?
    1. Eudoxus
    2. Archimedes
    3. Democritus
    4. Pythagoras
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  19. Question 19

    If an object is at rest, then the time (X-axis) versus distance (Y-axis) graph
    1. is vertical
    2. is horizontal
    3. has 45° positive slope
    4. has 45° negative slope
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  20. Question 20

    The slope of a velocity-time graph represents
    1. acceleration
    2. displacement
    3. distance
    4. speed
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