Final Exam Review Introductory Physics Part B

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

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

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

4 ) A car travels at a certain velocity. If it triples it’s speed, by how much does the KE increase? a) 2 times b)3 times c) 9 times d) none of these answers 9 times

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

6 ) What is the momentum of a 50 kg person walking 2 m/s? a)25 kg*m/s b) 5000 kg*m/s c) not enough information d) 100 kg*m/s 100 kg*m/s

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

8 ) 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

9 ) 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

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

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

12 ) What is density? a) how heavy an object is b) force/area c) mass/volume d) weight/volume mass/volume

13 ) What is the momentum of a 1200 kg 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

14 ) Calculate the work done if the net force on an object is 120N and it is pushed 3 meters. a) 40 J b) 123 J c) 360 J d) None of these answers 360 J

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

16 ) 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

17 ) 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

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

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

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

21 ) 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

22 ) When boiling water in the mountains, the temperature of the boiling water is: a) 100 degrees Celsius b) 212 degrees Fahrenheit c) less than100 degrees Celsius d) not affected by the pressure less than100 degrees Celsius

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

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

25 ) 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

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

27 ) Which of the following is true about potential energy? a) Objects with PE are always at rest b) There are four different forms of PE c) PE cannot change into KE d) PE is stored energy PE is stored energy

28 ) A 20 kg 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

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

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