Quiz about Final Exam Review

Question 1

Define vector:

Accepted Answer

A quantity that has both magnitude and direction.

Answer

A quantity that has only magnitude.

Answer

A type of scalar measurement.

Answer

A unit of distance.

Question 2

Define scalar:

Accepted Answer

A quantity that has only magnitude and no direction.

Answer

A quantity that has both magnitude and direction.

Answer

A unit of force in physics.

Answer

A device used to measure temperature.

Question 3

Define distance:

Accepted Answer

The total length of the path traveled by an object, regardless of direction.

Answer

The shortest straight line between two points.

Answer

The rate at which an object changes its position.

Answer

The direction in which an object moves.

Question 4

Define displacement:

Accepted Answer

The straight-line distance in a specific direction from the starting point to the ending point.

Answer

The total length of the path traveled regardless of direction.

Answer

The amount of matter in an object.

Answer

The rate at which velocity changes with time.

Question 5

A train goes 120 km per hour for 3 hours. How far does it go?

Accepted Answer

360 km

Answer

40 km

Answer

123 km

Answer

90 km

Question 6

Christine hits a golf ball 800 meters. It travels for 8 seconds. What is its speed?

Accepted Answer

100 m/s

Answer

6400 m/s

Answer

100 mi/hr

Answer

6400 mi/hr

Question 7

During which segment of the graph is the person traveling fastest?

Accepted Answer

Segment CD

Answer

Segment AB

Answer

Segment BC

Answer

Segment DE

Question 8

During which segment(s) of the graph is the person not moving?

Accepted Answer

Segment BC

Answer

Segment AB

Answer

Segment CD

Answer

Segment EF

Question 9

How much time goes by between points C and D?

Accepted Answer

4 hours

Answer

2 hours

Answer

6 hours

Answer

8 hours

Question 10

What is the speed of the person between point C and point D?

Accepted Answer

2.25 m/s

Answer

2 m/s

Answer

6 m/s

Answer

8 m/s

Question 11

When is the object moving forwards?

Accepted Answer

When the velocity is positive

Answer

When the velocity is negative

Answer

When the velocity is zero

Answer

When the velocity is increasing

Question 12

When is the skater not moving?

Accepted Answer

0 s

Answer

the skater is always moving

Answer

4-5 seconds

Answer

When the skater is turning

Question 13

A skateboarder does some sick tricks down by the skate park and produces the VT graph below. What is the maximum velocity of the skater?

Accepted Answer

2.5 m/s

Answer

2 m/s

Answer

4 m/s

Answer

8 m/s

Question 14

What is the skater's velocity at t=5 s?

Accepted Answer

1 m/s

Answer

0 m/s

Answer

2 m/s

Answer

6 m/s

Question 15

Which of the following lists three ways that an object can accelerate?

Accepted Answer

Increasing speed, decreasing speed, changing direction

Answer

Only increasing speed

Answer

Only changing direction

Answer

Only decreasing speed

Question 16

When doing a pushup, an athlete pushes downwards into the ground but his body goes upward. Which Newton's Law is this related to?

Accepted Answer

3rd

Answer

1st

Answer

2nd

Question 17

When more people are in a car (more mass), the car accelerates slower. Which Newton's Law is this related to?

Accepted Answer

2nd

Answer

3rd

Answer

1st

Question 18

A ball on the ground sits at rest until someone kicks it. Which Newton's Law is this related to?

Accepted Answer

1st

Answer

2nd

Answer

3rd

Answer

None of the above

Question 19

Define force

Accepted Answer

A push or pull on an object that can cause it to accelerate.

Answer

A measure of the amount of matter in an object.

Answer

The energy stored in an object due to its position.

Answer

A type of wave that requires a medium to travel.

Question 20

Define balanced force and provide an example

Accepted Answer

Forces that are equal in size but opposite in direction, resulting in no change in motion. Example: Two people pushing a box from opposite sides with equal force.

Answer

Forces that are unequal in size and act in the same direction, causing acceleration. Example: A person pushing a box across the floor.

Answer

A single force acting on an object, causing it to move in a straight line. Example: Gravity pulling an apple down.

Answer

Forces that act at a distance and do not touch the object. Example: Magnetic force between two magnets.

Question 21

Provide an example of an unbalanced force - ____________________________

Accepted Answer

Pushing a box so it starts moving.

Answer

A book resting on a table.

Answer

Gravity pulling an object up.

Answer

Buoyancy keeping a boat afloat.

Question 22

Define friction

Accepted Answer

A force that opposes motion between two surfaces that are in contact.

Answer

A force that pulls objects toward the center of the Earth.

Answer

A push or pull that causes an object to move.

Answer

A force that acts at a distance without touching.

Question 23

Provide an example of sliding friction:

Accepted Answer

Sliding a book across a table.

Answer

Jumping off a diving board.

Answer

Boiling water in a pot.

Answer

Growing a plant in soil.

Question 24

Which is an example of rolling friction?

Accepted Answer

A ball rolling on the floor.

Answer

A car parked in a garage.

Answer

A book lying on a table.

Answer

A tree standing in a garden.

Question 25

Which is an example of static friction?

Accepted Answer

A box resting on a table.

Answer

A car moving at constant speed.

Answer

Water boiling in a pot.

Answer

A ball rolling down a hill.

Question 26

Which is an example of fluid friction?

Accepted Answer

Swimming in water.

Answer

Walking on sand.

Answer

Climbing a tree.

Answer

Sitting on a chair.

Question 27

What is the force needed to make a $$7.5kg$$ object accelerate at $$6.1m/s^2$$ ?

Accepted Answer

45.75 N

Answer

15.5 N

Answer

30 N

Answer

60 N

Question 28

A stone is traveling at 5 m/s and then accelerates at a rate of 3 m/s² until it reaches 10 m/s. How long did it take to reach this velocity?

Accepted Answer

1.67 s

Answer

-1.67 s

Answer

25 s

Answer

53 s

Question 29

A 20 kg object is acted upon by a force of 60 N. What is the acceleration of the object?

Accepted Answer

3 m/s2

Answer

1.2 m/s2

Answer

0.33 m/s2

Answer

80 m/s2

Question 30

A 0.2 kg soccer ball is kicked and reaches a momentum of 16 kg*m/s. What was the velocity the ball traveled at?

Accepted Answer

80 m/s

Answer

8 m/s

Answer

3.2 m/s

Answer

0.8 m/s

Question 31

A suitcase has a mass of 6.5kg, what is its weight on Jupiter where gravity is $$24.8m/s^2$$ ?

Accepted Answer

161.2N

Answer

63.7N

Answer

62 N

Answer

6.5kg

Question 32

Define work.

Accepted Answer

Work is the product of force and displacement in the direction of force.

Answer

Work is the rate of doing energy.

Answer

Work is the amount of energy stored in an object.

Answer

Work is the force applied perpendicular to displacement.

Question 33

The unit for work is:

Accepted Answer

Joule

Answer

Watt

Answer

Newton

Answer

Pascal

Question 34

What MUST happen in order for work to be done?

Accepted Answer

A force must be applied and there must be movement in the direction of the force.

Answer

An object must remain stationary.

Answer

Energy must be lost as heat only.

Answer

No force should be applied.

Question 35

Is work being done when a person is pushing a lawn mower

Accepted Answer

Yes

Answer

No

Answer

Maybe

Answer

Only if it is raining

Question 36

Is work being done when a person is standing at the top of a set of stairs?

Accepted Answer

No

Answer

yes

Question 37

Power is defined as:

Accepted Answer

The rate at which work is done

Answer

The amount of force applied

Answer

The distance covered in unit time

Answer

The energy stored in an object

Question 38

What is the unit for power?

Accepted Answer

Watt

Answer

Joule

Answer

Newton

Answer

Pascal

Question 39

A force of 20 N is used to move a cart 4 meters across the floor. How much work is done?

Accepted Answer

80 J

Answer

24 J

Answer

400 J

Answer

5 J

Question 40

A person is using a force of 250 N to pull a sled. How much power does the person need to pull the sled a distance of 8 m in 16 s?

Accepted Answer

125 W

Answer

32,000 J

Answer

16 m

Answer

16 N

Question 41

Kinetic energy is the energy of motion. Which two variables are needed to find kinetic energy?

Accepted Answer

Mass and velocity

Answer

Force and distance

Answer

Time and acceleration

Answer

Power and work

Question 42

What two variables are needed to calculate Mechanical Energy?

Accepted Answer

Kinetic Energy and Potential Energy

Answer

Force and Distance

Answer

Mass and Acceleration

Answer

Work and Power

Question 43

What point on a roller coaster has the highest kinetic energy?

Accepted Answer

at the bottom of the curve, where speed is highest

Answer

at the top of the curve, where speed is lowest

Answer

midway up the curve, where speed is moderate

Answer

at a random point on the curve, not at the bottom

Question 44

What points on a roller coaster have the lowest kinetic energy?

Accepted Answer

at the highest points, where speed is lowest

Answer

at the lowest point, where speed is highest

Answer

at the midpoints, where speed is moderate

Answer

All points have the same kinetic energy

Question 45

What points on a roller coaster have the highest potential energy?

Accepted Answer

at the highest points

Answer

at the lowest point

Answer

at the middle points

Answer

All points have the same potential energy

Question 46

A 7.5 kg backpack is dropped. When it is 10 m above the ground, its velocity is 5 m/s. What is its mechanical energy at that point?

Accepted Answer

828.75 J

Answer

120 J

Answer

350 J

Answer

200 J

Question 47

A 50 kg person is on a slide at a height of 5.2 m. If the total mechanical energy is 4000 J, what is the person's kinetic energy?

Accepted Answer

1452 J

Answer

2000 J

Answer

1000 J

Answer

500 J

Question 48

A 64 kg child is on a swing at a height of 6.7 m. The child has 8450 J of mechanical energy and 4247.76 J of Kinetic energy. What is the velocity the child is traveling at?

Accepted Answer

$$11.52 m/s$$

Answer

$$16.29 m/s$$

Answer

$$8.12 m/s$$

Question 49

What type of wave is shown on top?

Accepted Answer

Transverse wave

Answer

Longitudinal wave

Answer

Surface wave

Answer

Standing wave

Question 50

Label the parts of the wave.

Accepted Answer

a. Crest b. Amplitude c. Trough d. Wavelength

Answer

a. Node b. Frequency c. Period d. Reflection

Answer

a. Compression b. Rarefaction c. Node d. Antinode

Answer

a. Peak b. Valley c. Cycle d. Phase

Question 51

What type of wave is shown on the bottom?

Accepted Answer

Longitudinal wave

Answer

Transverse wave

Answer

Surface wave

Answer

Electromagnetic wave

Question 52

Label the parts of the wave.

Accepted Answer

G. Wavelength, H. Compression, I. Rarefaction

Answer

G. Compression, H. Rarefaction, I. Wavelength

Answer

G. Rarefaction, H. Wavelength, I. Compression

Answer

G. Compression, H. Wavelength, I. Rarefaction

Question 53

List the different types of electromagnetic waves in order of lowest to highest energy.

Accepted Answer

Radio waves < Microwaves < Infrared < Visible light < Ultraviolet < X-rays < Gamma rays

Answer

Gamma rays < X-rays < Ultraviolet < Visible light < Infrared < Microwaves < Radio waves

Answer

Infrared < Radio waves < Microwaves < Visible light < Ultraviolet < X-rays < Gamma rays

Answer

Visible light < Infrared < Microwaves < Radio waves < Ultraviolet < X-rays < Gamma rays

Question 54

Refraction is the bending of light as it passes from one medium to another. How is it different from reflection?

Accepted Answer

Refraction involves bending of light, while reflection involves bouncing back of light.

Answer

Refraction and reflection both involve bending of light.

Answer

Reflection is the bending of light, while refraction is the bouncing back of light.

Answer

Refraction and reflection are the same phenomena.

Question 55

The angle of reflection is:

Accepted Answer

Always equal to the angle of incidence

Answer

Always greater than the angle of incidence

Answer

Always less than the angle of incidence

Answer

Unrelated to the angle of incidence

Question 56

The light is bending toward or away from the normal line.

Accepted Answer

Toward the normal line

Answer

Away from the normal line

Question 57

The angle of refraction is:

Accepted Answer

the angle between the refracted ray and the normal

Answer

the angle between the incident ray and the normal

Answer

the angle between the reflected ray and the normal

Answer

the angle between the incident and refracted rays

Question 58

Light is a form of __________ energy.

Accepted Answer

Electromagnetic

Answer

Sound

Answer

Fun

Answer

Thermal

Question 59

A piece of pizza is an example of what form of energy?

Accepted Answer

Chemical

Answer

Thermal

Answer

Radiant

Answer

Electrical

Question 60

Which best describes a simple series circuit?

Accepted Answer

Electricity flows along one pathway.

Answer

The flow of electricity comes from the switch.

Answer

Electricity flows along many pathways.

Answer

The flow of electricity comes from the light bulb.

Question 61

What type of circuit is show in the image?

Accepted Answer

Parallel Circuit

Answer

Series Circuit

Question 62

If you increase the resistance of a circuit and voltage remains constant, what happens?

Accepted Answer

Current decreases

Answer

Current increases

Answer

Electrons disappear

Answer

Bulbs get brighter

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