Final Exam Review

Introductory Physics Part B

1) The amount of matter in an

object is

a) weightb) massc) volumed) area

mass

2)The amount of space taken up by an object is

a) weightb) massc) volumed) surface area

volume

3) What is force?

a) potential energyb) a push or a pullc) workd) 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 timesc) 9 timesd) none of these answers

9 times

5) What is the correct formula

for momentum?

a) mass/volumeb) mass x volumec) mass x velocityd) velocity/mass

Mass x velocity

6) What is the momentum of a 50 kg person walking

2 m/s?

a)25 kg*m/sb) 5000 kg*m/sc) not enough informationd) 100 kg*m/s100 kg*m/s

7) The ability to do work is:

a) energyb) potential energyc) accelerationd) 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 massb) conservation of matterc) conservation of

momentumd) Conservation of energyConservation of energy

9) If an object has energy it:

a) has the ability to do workb) must have kinetic energyc) is doing workd) 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 Jb) 98 Jc) .98 Jd) 9.8 J

98 J

11) What is the formula for work?

a) force x circumferenceb) force/ areac) Force x distanced) Distance and weight

Force x distance

12) What is density?

a) how heavy an object isb) force/areac) mass/volumed) weight/volume

mass/volume

13) What is the momentum of a

1200 kg car traveling at 8 m/s?

a) 150 kg*m/sb) 9600 kg*m/sc) 1208 kg*m/sd) 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 Jb) 123 Jc) 360 Jd) 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) 104.72 Wb) 374.4 Wc) 28.9 Wd) 9360 W

374.4 W

16) In order to increase power,the

student in the previous problem

could:a) Lose weightb) Gain weight yet keep the same

speedc) Climb the stairs slowerd) Climb the stairs fastere) Both b and dBoth b and d

17) Heat is best described as:

a) The transfer of thermal energy

b) How hot something may bec) Thermal energyd) Temperature

The transfer of thermal energy

18) In the electromagnetic

spectrum, the waves with the highest

energy are:

a) microwavesb) X raysc) Gamma raysd) Radio waves

Gamma rays

19) A measure of the average

kinetic energy of the molecules is:a)temperatureb) heatc) Thermal energyd) friction

temperature

20) As water freezes, the

density decreases because

the________ increases

a) pressureb) volumec) iced) Thermal energy

volume

21) How much kinetic energy

does a 24 kg. cart traveling 3m/s

have?a) 108 Jb) 72 Jc) 8 Jd) None of these answers

108 J

22) When boiling water in the mountains, the temperature of the

boiling water is:

a) 100 degrees Celsiusb) 212 degrees Fahrenheitc) less than100 degrees Celsiusd) not affected by the pressure

less than100 degrees Celsius

23) The temperature of boiling water in

Celsius is ___ degrees.

a) 212b) 100c) 32d) 0

100

24) The weight of a 2 kg box of

chocolates would be____ N.

a) 2b) 20c) .2d) 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 eastb) 20 N westc) 30 N eastd) 30 N west

20 N east

26) A force vector shows

both ________ and direction.

a) pressureb) Magnitude (amount)c) energyd) power

Magnitude (amount)

27) Which of the following is true about potential

energy?a) Objects with PE are always at restb) There are four different forms of PEc) PE cannot change into KEd) PE is stored energyPE 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)2b) 4c) 5d) 1

4

29) How much work is done when a 12 kg object is lifted 2 meters?

a) 24 J b) 120 Jc) 240 Jd) Cannot be determined

240 N*m

30) The method of heat transferring which fluids move thermal energy in

currents is:

a) conductionb) radiationc) Lava flowsd) ConvectionConvection