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Force and Motion Review

Force and Motion Review. Introductory Physics Part A. 1) What 2 factors are involved in calculating speed?. Distance and speed Distance and time Velocity and time Velocity and speed. Distance and time. 2) What is the equation for acceleration?. time interval/ change of velocity

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Force and Motion Review

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  1. Force and Motion Review Introductory Physics Part A

  2. 1) What 2 factors are involved in calculating speed? • Distance and speed • Distance and time • Velocity and time • Velocity and speed Distance and time

  3. 2) What is the equation for acceleration? • time interval/ change of velocity • change of velocity/ time interval • distance/time • Time/distance change of velocity/ time interval

  4. 3) A bike goes from rest to 30 km/h in 20 seconds what is the acceleration? • 1.25 • 50 • 10 • 1.5 1.5

  5. 4) In 3 seconds a car increases its speed from 40km/h to 45km/h while a bicycle goes from rest to 5km/h which has a greater acceleration? • car • bike • same • I don’t know same

  6. 5) The rate at which velocity changes with time where the change in velocity may be in magnitude or direction or both. This is the definition of: • speed • velocity • free fall • acceleration acceleration

  7. 6) The formula for distance traveled in free fall is d = • 1/2gt(2) • 1/2gt2 • 1/2g2t • 1/2tg(2) 1/2gt2

  8. 7) The amount of matter in an object is • weight • mass • volume • area mass

  9. 8)The amount of space taken up by an object is • weight • mass • volume • surface area volume

  10. 9) “Every material object continues in its state of rest, or in uniform motion in a straight line, unless acted upon by an unbalanced force.” What is this law? • Newton’s first law • Newton’s 2nd law • Newton’s 3rd law • Momentum law Newton’s first law

  11. 10) The acceleration of an object is directly proportional to the • mass • force • speed • velocity force

  12. 11) What is force? • potential energy • a push or a pull • work • kinetic energy A push or a pull

  13. 12) Acceleration is inversely proportional to: • force • mass • work • pressure mass

  14. 13) When the acceleration of an object is zero, we say that the object doing what? • Free falling • changing direction • speeding up • constant motion or staying still Constant motion or staying still

  15. 14) For every action force there is an equal and opposite: • energy flow • acceleration • reaction force • Newton's 3rd law reaction force

  16. 15) Which of the following are most important in determining the amount of gravity between two objects? • time and weight • b) Mass and distance • c) Force and mass • d) distance and weight Mass and distance

  17. 16) What law is this: F = Gm1m2 d2 • Ohm’s Law • b) Coulomb’s Law • c) Law of Universal Gravitation • d) Newton’s 1st Law of Motion Law of Universal Graviation

  18. 17) What is density? • how heavy an object is • b) force/area • c) mass/volume • d) weight/volume Mass/volume

  19. 18) Calculate the speed of a car that went 144 miles in 1 hour 30 minutes a) 96 mph b) 216 mph c) 72 mph d) 115 mph 96 mph

  20. 19) What is the force required to accelerate a 32 kg. box at a rate of 3 m/s2? • 35 N • b) 96 N • c) 10.67 N • d) There are several forces 96 N

  21. 20) Newton’s second law states • F= ma • b) P1V1 = P2V2 • c) D = m/v • d) P = force/area F= ma

  22. 21) An object that is in free fall but not accelerating any more must be • on the ground • b) experiencing • c) At terminal velocity • d) deceased At terminal velocity

  23. 22) After 4 seconds of free fall, an object should be traveling at ___ m/s • 10 • b) 15 • c) 25 • d) 40 40

  24. 23) The weight of a 2 kg. Box of chocolates would be____ N. • 2 • b) 20 • c) .2 • d) 12 20

  25. 24) What is the net force if an object is pushed west with a force of 5 N and east with a force of 25 N. • 20 N east • b) 20 N west • c) 30 N east • d) 30 N west 20 N east

  26. 25) A force vector shows both ________ and direction. • pressure • b) Magnitude (amount) • c) energy • d) power Magnitude (amount)

  27. 26) A car and a truck collide head-on. The car has a mass half that of the truck. The impact force of the truck on the car is 500 N. what is the impact force of the car on the truck • 250 N • b) 500 N • c) 750 N • d) Not sure 500 N

  28. 27) An object following a straight-line path at constant speed • has zero acceleration • b) Must be moving in a vacuum or in the absence of air friction. • c) Has no forces acting on it • d) Has a net force acting in the direction of motion has zero acceleration

  29. 28) 74 cm = ____ m • 0.74 • b) 7.4 • c) 7400 • d) None of these 0.74

  30. 28) 478 mL = ____ L • 0.478 • b) 4.78 • c) 4780 • d) None of these 0.478

  31. 29) Which of the following graphs shows the relationship between mass and acceleration? a b • b) • c) None of these a

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