2. Final Exam Review Physical Science

3. 1) What 2 factors are involved in calculating speed? a)Distance and speed b)Distance and time c)Velocity and time d)Velocity and speed Distance and time

4. 2) What is the equation for acceleration? a) time interval/ change of velocity b) change of velocity/ time interval c) distance/time d)Time/distance change of velocity/ time interval

5. 3 ) A bike goes from rest to 30 km/h in 20 seconds what is the acceleration? a) 1.25 b) 50 c) 10 d) 1.5 1.5

6. 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? a) car b) bike c) same d) I don’t know same

7. 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: a) speed b) velocity c) free fall d) acceleration acceleration

8. 6 ) The formula for distance traveled in free fall is d = a) 1/2gt(2) b) 1/2gt 2 c) 1/2g 2 t d) 1/2tg(2) 1/2gt 2

9. 7) The amount of matter in an object is a) weight b) mass c) volume d) area mass

10. 8) The amount of space taken up by an object is a) weight b) mass c) volume d) surface area volume

11. 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? a) Newton’s first law b) Newton’s 2 nd law c) Newton’s 3 rd law d) Momentum law Newton’s first law

12. 10 ) The acceleration of an object is directly proportional to the a) mass b) force c) speed d) velocity force

13. 11 ) What is force? a) potential energy b) a push or a pull c) work d) kinetic energy A push or a pull

14. 12 ) Acceleration is inversely proportional to: a) force b) mass c) work d) pressure mass

15. 13 ) When the acceleration of an object is zero, we say that the object doing what? a)Free falling b) changing direction c) speeding up d) constant motion or staying still Constant motion or staying still

16. 14 ) For every action there is an equal and opposite: a) energy flow b) acceleration c) reaction d) Newton's 3 rd law reaction

17. 15 ) What is the correct formula for momentum? a) mass/volume b) mass x volume c) mass x velocity d) velocity/mass Mass x velocity

18. 16 ) What is the power if the voltage is 110 V and the current 4 Amps? a) 27.5 W b) 27.5 Ohms c) 440 Ohms d) 440 W 440 W

19. 17 ) V = IR a) Ohm’s Law b) Coulomb’s Law c) Voltage Law d) Electric Power Ohm’s Law

20. 18 ) The ability to do work is: a) energy b) potential energy c) acceleration d) motion energy

21. 19 ) What law is this? Energy cannot be created or destroyed; it may be transformed from one for into another, but the total amount of energy never changes., a) conservation of mass b) conservation of matter c) conservation of momentum d) Conservation of energy Conservation of energy

22. 20 ) If an object has energy it: a) has the ability to do work b) must have kinetic energy c) is doing work d) Has force Has the ability to do work

23. 21 ) What is the potential energy of 1 kg. block on a ledge 10 meters high a) 980 kg*m b) 98 kg*m c).98 kg*m d) 9.8 kg*m 98 kg*m

24. 22 ) What is the formula for work? a) force x circumference b) force/ area c) Force x distance d) Distance and weight Force x distance

25. 23 )Which of the following are most important in determining the amount of gravity between two objects? a) time and weight b) Mass and distance c) Force and mass d) distance and weight Mass and distance

26. 24 )What law is this: F = kq 1 q 2 d 2 ? a) Ohm’s Law b) Law of Gravity c) Coulomb’s Law d) Law of Conservation of energy Coulomb’s Law

27. 25 )Which circuit would allow other lights to stay lit if one went out? a) short circuit b) Parallel circuit c) Series circuit d) Open circuit Parallel circuit

28. 26 ) What is density? a) how heavy an object is b) force/area c) mass/volume d) weight/volume Mass/volume

29. 27 ) Which is not a way to generate static charge? a) induction b) touching c) conduction d) friction touching

30. 28 ) What is the momentum of a 1200kg. car traveling at 8 m/s? a)150 kg*m/s b) 9600 kg*m/s c) 1208 kg*m/s d) Cannot be determined with information given 9600 kg*m/s

31. 29 ) 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

32. 30 ) How much power is used if a student weighing 520 N. climbs the stairs (vertical height) of 3.6 meters in 5 s. a)104.72 W b) 374.4 W c) 28.9 W d) 9360 W 374.4 W

33. 31 ) In order to increase power,the student in the previous problem could: a)Lose weight b) Gain weight yet keep the same speed c) Climb the stairs slower d) Climb the stairs faster e) Both b and d Both b and d

34. 32 ) What is the force required to accelerate a 32 kg. box at a rate of 3 m/s 2 ? a)35 N b) 96 N c) 10.67 N d) There are several forces 96 N

35. 33 ) Distilled water has a density of _________ g/cm 3 a)0 b) 9.8 c) 2 d) 1 1

36. 34 ) Heat is best described as: a)The transfer of thermal energy b) How hot something may be c) Thermal energy d) Temperature The transfer of thermal energy

37. 35 ) Newton’s second law states a)F= ma b) P1V1 = P2V2 c) D = m/v d) P = force/area F= ma

38. 36 ) In the electromagnetic spectrum, the waves with the highest energy are: a)microwaves b) X rays c) Gamma rays d) Radio waves Gamma rays

39. 37 ) A measure of the average kinetic energy of the molecules is: a)temperature b) heat c) Thermal energy d) friction temperature

40. 38 ) As water freezes, the density decreases because the________ increases a) pressure b) volume c) ice d) Thermal energy volume

41. 39 ) How much kinetic energy does a 24 kg. cart traveling 3m/s have? a) 108 J b) 72 J c) 8 J d) None of these answers 108 J

42. 40 ) An object that is in free fall but not accelerating any more must be ___________ a) on the ground b) experiencing c) At terminal velocity d) deceased At terminal velocity

43. 41 ) The temperature of boiling water in Celsius is ___ degrees. a) 212 b) 100 c) 32 d) 0 100

44. 42 ) After 4 seconds of free fall, an object should be traveling at ___ m/s a) 10 b) 15 c) 25 d) 40 40

45. 43 ) The weight of a 2 kg. Box of chocolates would be____ N. a) 2 b) 20 c).2 d) 12 20

46. 44 ) 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. a) 20 N east b) 20 N west c) 30 N east d) 30 N west 20 N east

47. 45 ) A force vector shows both ________ and direction. a) pressure b) Magnitude (amount) c) energy d) power Magnitude (amount)

48. 46 ) 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 a) 250 N b) 500 N c) 750 N d) Not sure 500 N

49. 47 ) An object following a straight-line path at constant speed a) 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

50. 48 ) A 20kg. Cart moving 5m/s collides with a stationary cart with a mass of 5kg. They stick together after the crash. How fast are they going? a)2 b) 4 c) 5 d) 1 4

51. 49 ) How much work is done when a 12 kg object is lifted 2 meters? a)24 N*m b) 120 N*m c) 240 N*m d) Cannot be determined 240 N*m

52. 50 ) The method of heat transferring which fluids move thermal energy in currents is: a)conduction b) radiation c) Lava flows d) Convection Convection