Final Exam Review

Physical Science

1) What 2 factors are involved in

calculating speed?

a)Distance and speedb)Distance and timec)Velocity and timed)Velocity and speed

Distance and time

2) What is the equation for acceleration?

a) time interval/ change of velocityb) change of velocity/ time intervalc) distance/time

d)Time/distance

change of velocity/ time interval

3) A bike goes from rest to 30 km/h in 20 seconds what is the

acceleration?

a) 1.25b) 50c) 10d) 1.51.5

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?

a) carb) bikec) samed) I don’t

know

same

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) speedb) velocityc) free falld) accelerationacceleration

6) The formula for distance

traveled in free fall is d =

a) 1/2gt(2)b) 1/2gt2

c) 1/2g2td) 1/2tg(2)

1/2gt2

7) The amount of matter in an

object is

a) weightb) massc) volumed) area

mass

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

a) weightb) massc) volumed) surface area

volume

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 lawb) Newton’s 2nd lawc) Newton’s 3rd lawd) Momentum law

Newton’s first law

10) The acceleration of an object is directly

proportional to thea) massb) forcec) speedd) velocity

force

11) What is force?

a) potential energyb) a push or a pullc) workd) kinetic energy

A push or a pull

12) Acceleration is inversely

proportional to:

a) forceb) massc) workd) pressure

mass

13) When the acceleration of an object is zero, we

say that the object doing what?

a)Free fallingb) changing directionc) speeding upd) constant motion or staying stillConstant motion or staying still

14) For every action there is an equal

and opposite:a) energy flowb) accelerationc) reactiond) Newton's 3rd law

reaction

15) What is the correct formula

for momentum?

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

Mass x velocity

16) What is the power if the

voltage is 110 V and the current 4

Amps?a) 27.5 Wb) 27.5 Ohmsc) 440 Ohmsd) 440 W440 W

17) V = IR

a) Ohm’s Law b) Coulomb’s Lawc) Voltage Lawd) Electric Power

Ohm’s Law

18) The ability to do work is:

a) energyb) potential energyc) accelerationd) motion

energy

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 massb) conservation of matterc) conservation of

momentumd) Conservation of energyConservation of energy

20) 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

21) What is the potential energy of 1 kg. block on a ledge

10 meters high

a) 980 kg*mb) 98 kg*mc) .98 kg*md) 9.8 kg*m

98 kg*m

22) What is the formula for work?

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

Force x distance

23)Which of the following are most important in

determining the amount of gravity between two

objects?

a) time and weightb) Mass and distancec) Force and massd) distance and weight

Mass and distance

24)What law is this: F = kq1q2

d2?

a) Ohm’s Lawb) Law of Gravityc) Coulomb’s Lawd) Law of Conservation of

energy

Coulomb’s Law

25)Which circuit would

allow other lights to stay lit if one

went out?

a) short circuitb) Parallel circuitc) Series circuitd) Open circuit

Parallel circuit

26) What is density?

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

Mass/volume

27) Which is not a way to generate static charge?

a) inductionb) touchingc) conductiond) friction

touching

28) What is the momentum of a

1200kg. 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

29) Calculate the speed of a car that went 144 miles in 1 hour 30 minutes

a) 96 mphb) 216 mphc) 72 mphd) 115 mph

96 mph

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 Wb) 374.4 Wc) 28.9 Wd) 9360 W

374.4 W

31) 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

32) What is the force required to

accelerate a 32 kg. box at a rate of 3

m/s2?

a) 35 Nb) 96 Nc) 10.67 Nd) There are several forces

96 N

33) Distilled water has a density of _________ g/cm3

a) 0b) 9.8c) 2d) 11

34) 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

35) Newton’s second law states

a) F= mab) P1V1 = P2V2c) D = m/vd) P = force/area

F= ma

36) In the electromagnetic

spectrum, the waves with the highest

energy are:

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

Gamma rays

37) A measure of the average

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

temperature

38) As water freezes, the

density decreases because

the________ increases

a) pressureb) volumec) iced) Thermal energy

volume

39) 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

40) An object that is in free fall

but not accelerating any

more must be ___________

a) on the groundb) experiencingc) At terminal velocityd) deceased

At terminal velocity

41) The temperature of boiling water in

Celsius is ___ degrees.

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

100

42) After 4 seconds of free fall, an object

should be traveling at ___ m/s

a) 10b) 15c) 25d) 4040

43) The weight of a 2 kg. Box of

chocolates would be____ N.

a) 2b) 20c) .2d) 12

20

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 eastb) 20 N westc) 30 N eastd) 30 N west

20 N east

45) A force vector shows

both ________ and direction.

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

Magnitude (amount)

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 Nb) 500 Nc) 750 Nd) Not sure

500 N

47) An object following a

straight-line path at constant

speeda) has zero accelerationb) Must be moving in a vacuum or

in the absence of air friction.c) Has no forces acting on itd) Has a net force acting in the

direction of motion

has zero acceleration

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)2b) 4c) 5d) 1

4

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

a) 24 N*m b) 120 N*mc) 240 N*md) Cannot be determined

240 N*m

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

currents is:

a) conductionb) radiationc) Lava flowsd) ConvectionConvection