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Basics of Mechanics

Test your basics of Mechanics

1. 1

   What is the SI unit of force?

   • Joule
   • Watt
   • Newton
   • Pascal
2. 2

   What is Newton's second law?

   • F = mv
   • F = ma
   • F = m/a
   • F = a/m
3. 3

   What is momentum?

   • mv
   • ma
   • mgh
   • 1/2mv²
4. 4

   What is the SI unit of momentum?

   • N·m
   • kg·m/s
   • J
   • W
5. 5

   What is velocity?

   • Distance only
   • Speed with direction
   • Mass per time
   • Force per area
6. 6

   What is acceleration?

   • Change in velocity per unit time
   • Distance per unit time
   • Mass times velocity
   • Force divided by area
7. 7

   What is the acceleration due to gravity near Earth's surface?

   • 2.8 m/s²
   • 4.9 m/s²
   • 9.8 m/s²
   • 19.6 m/s²
8. 8

   What is displacement?

   • Total path length
   • Change in position
   • Speed
   • Acceleration
9. 9

   What is work in physics?

   • F/d
   • Fd cosθ
   • F+d
   • F/d²
10. 10

    What is the SI unit of work?

    • Newton
    • Joule
    • Watt
    • Pascal
11. 11

    What is kinetic energy?

    • mgh
    • 1/2mv²
    • Fd
    • ma
12. 12

    What is gravitational potential energy near Earth's surface?

    • 1/2mv²
    • mgh
    • Fd
    • ma
13. 13

    What is power?

    • Work/time
    • Force/time
    • Energy × time
    • Mass/volume
14. 14

    What is the SI unit of power?

    • Joule
    • Watt
    • Newton
    • Volt
15. 15

    What is friction?

    • A force opposing relative motion
    • An energy source
    • Mass per volume
    • An electric charge
16. 16

    What happens to an object at rest when the net force is zero?

    • It must accelerate
    • It remains at rest
    • It doubles its mass
    • It gains energy
17. 17

    What happens to an object moving at constant velocity when net force is zero?

    • It accelerates
    • It stops immediately
    • It continues at constant velocity
    • It reverses
18. 18

    What is impulse?

    • Force × time
    • Mass × distance
    • Energy/time
    • Pressure × volume
19. 19

    What quantity does impulse change?

    • Mass
    • Momentum
    • Temperature
    • Volume
20. 20

    What is torque?

    • Force × perpendicular distance
    • Mass × velocity
    • Energy/time
    • Pressure × area
21. 21

    What is the SI unit of torque?

    • N·m
    • kg·m/s
    • J/s
    • Pa
22. 22

    What is equilibrium?

    • Net force and net torque are both zero
    • Maximum acceleration
    • Maximum velocity
    • Zero mass
23. 23

    What is centripetal acceleration directed toward?

    • Away from the center
    • Tangent to the path
    • The center of the circular path
    • Upward only
24. 24

    What is the formula for centripetal acceleration?

    • v/r
    • v²/r
    • vr
    • r/v
25. 25

    What happens to momentum in an isolated system?

    • It is always zero
    • It is conserved
    • It always increases
    • It depends only on time