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WorksheetsExam 1 - Topics 1-4
Total questions: 119
Worksheet time: 10hrs 55mins
How long will it take a car to accelerate from 20 m/s to 26 m/s at a rate of 1.4 m/s²?
2.2 s
2.7 s
4.3 s
4.6 s
In which of the following time intervals is the speed of the object decreasing?
between 0s and 2s
between 2s and 4s
between 6s and 8s
between 8s and 10s
The graph would MOST LIKELY apply to which of the following events?
A soccer ball that is at rest is suddenly kicked.
A ball is thrown upward and returns to the ground.
A person who is running at a constant speed decides to run faster.
A car traveling at a constant speed applies its brakes and comes to a stop.
According to the graph above, during which interval is the cat at rest?
0.0s to 5.0s
5.0s to 10.0s
10.0s to 15.0s
Which of the following is a physical quantity that has both magnitude and direction?
Vector
Scalar
Resultant
Frame of reference
A student leaving school walks 2.5 km north and then walks 1.0 km south. What is the student’s displacement?
1.0 km south
1.5 km north
2.5 km north
3.5 km south
An elevator in an office building completed the following trips:
1st floor to 8th floor,
8th floor to 4th floor,
4th floor to 13th floor.
The distance between each floor of the office building is 4.0 m. Which choice shows the total distance traveled and displacement of the elevator?
Distance 48 m, Displacement 80 m
Distance 80 m, Displacement 48 m
Distance 80 m, Displacement 80 m
Distance 48 m, Displacement 48 m
An object is moving. Every second, the object’s speed is measured. When the clock reads 0 seconds, the object’s speed is 20 miles per hour (mi/hr). When the clock reads 2 seconds, a single constant force begins to act that slows the object down. This force continues to act during the time shown in the table.
Which row of the table could be a correct representation of the object's speed between 0 seconds and 6 seconds? Assume that if a change in speed has occurred, the change is shown in the table.
Row A
Row B
Row C
Row D
Which is true of a kilogram of feathers and a kilogram of bricks?
The bricks are less dense
They have the same mass
They have the same volume
The feathers are more dense
Which of the following is a vector quantity?
force
mass
temperature
kinetic energy
A car is traveling at a constant speed of 12 m/s. When the driver accelerates, the car reaches a speed of 26 m/s in 6 s. What is the average acceleration of the car?
2 m/s/s
2.3 m/s/s
4.3 m/s/s
84 m/s/s
12. Which point on this position vs. time graph has the fastest speed?
Point 1
Point 2
Point 3
Point 4
How can a scientific hypothesis be described?
It can be tested.
It may be described by all of the above.
It is a prediction of the outcome of an experiment.
It may be modified as new evidence becomes available.
A well-known and respected physicist conducts an experiment based on the work of others in the physics community. The results of the experiment unexpectedly provide evidence from which the physicist infers the existence of a new elementary subatomic particle. Which of the following statements best predicts how other scientists are likely to respond to this discovery?
Other scientists are likely to verify the discovery as a law on the basis of the physicist's reputation.
Other scientists are likely to replicate his experiment to test the physicist's ideas about the new particle.
Other scientists are likely to question the validity because the physicist drew on the work of other scientists.
Given the following 3 measurements of the same object:
76.48 cm,
76.47 cm,
and 76.50 cm,
if the actual length is 76.49 cm are these measurement accurate or precise?
They are both accurate and precise
They are neither accurate nor precise
They are accurate but not precise
They are precise but not accurate
A plane flies from Columbus, Ohio to Indianapolis, Indiana in 1.125 hours (hr). Indianapolis is approximately 270 kilometers (km) due west of Columbus.
Which of the following is a vector description of the velocity of the plane?
270 kilometers
240 kilometers per hour
270 kilometers due west
240 kilometers per hour due west
A company has built a device that measures the mass of an astronaut while in zero gravity. Before sending the device to a space station, a group of scientists tests it for accuracy and precision.
During the first stage of testing, a 100.00 kg mass is placed in the device and measured ten times.
The results are as follows: 103.5 kg, 103.3 kg, 103.3 kg, 103.4 kg, 103.4 kg, 103.5 kg, 103.4 kg, 103.2 kg, 103.3 kg, and 103.4 kg
In a report to the company, the scientists write: "The device is precise but not accurate."
Which step of the scientific method does the statement "the device is precise but not accurate" represent?
ask a question
form a hypothesis
repeat an experiment
communicate the result
Which statement is true about the intent of a scientific law?
It attempts to explain why nature behaves as it does.
It attempts to describe patterns of physical relationships.
It attempts make an educated guess of what will happen next.
It attempts to predict how an object will behave everywhere in the universe.
Which statement best describes scientific theories?
They usually contain mathematical equations.
They describe what will occur under certain conditions.
They are well-supported explanations of what is observed in nature.
They become laws after years of supporting evidence from experiments.
Physics involves the study of the fundamental scientific laws of nature. Which statement is most accurate concerning a scientific law?
A scientific law is an explanation for how nature works that is based on observations.
A scientific law originates as a scientific theory and describes natural relationships.
A scientific law is an explanation for a series of observations and confirmed by evidence.
A scientific law is a description of specific relationships under given conditions in nature.
Four people drive their cars without knowing that their engines are leaking oil. The four diagrams show the oil-drop spills from the engines as the cars travel from left to right. Each car's engine leaks oil at the same rate. Which diagram represents the situation of the car that is going fast, then slowing down, and then speeding up?
Diagram #1
Diagram #2
Diagram #3
Diagram #4
Which of the following units could be used for expressing a vector quantity?
m²
m³
m/s East
cal/moles °C
What is the difference between the measurements of speed and velocity?
Speed is a scalar that is only a magnitude, but velocity is a vector that has magnitude and direction.
Speed indicates an object's change in distance over time, but velocity indicates the scalar time of an object.
Speed is a measure of how fast something is moving, but velocity is a measure of the change in speed over time.
Speed measures the direction of an object in motion, but velocity measures the magnitude of an object in motion.
Which of the following is an example of experimenter bias?
A. A scientist repeats an experiment published by another scientist.
B. A scientist sends his or her research to a scientific journal for review.
C. A scientist reviews scientific literature before designing an experiment.
D. A scientist alters the design of an experiment so that he or she can obtain the desired outcome.
Why is a hypothesis important to a scientific investigation?
Without a hypothesis, there is no way to tell if you did an experiment correctly.
Without a hypothesis, you have no statement to tell you if your results are correct.
Without a hypothesis, there is no way to tell if you have done enough research about the problem.
Without a hypothesis, you have no statement to which you can compare your results to in order for you to determine what those results mean.
Which of these best describes the purpose of a hypothesis in scientific studies?
to explain the prediction of a scientist
to propose an explanation to a question
to describe why a scientist made a particular conclusion
to summarize all the information known about the subject
A science teacher divided her class into four groups and asked each group to submit an idea for an experimental project in Earth science, complete with independent and dependent variables. The groups submitted their ideas with the following titles:
Group W: “The History of Solar Power in the State of Florida”
Group X: “A Model of the Hawaiian Volcano Mauna Loa”
Group Y: “The Effects of Plant Growth on the Amount of Soil Erosion”
Group Z: “How Many Types of Soil Are Present at Our School?”
Based on the titles, which group most likely designed an experimental project?
Group W
Group X
Group Y
Group Z
A student compares the average speed of three adults traveling by different modes of transportation: walking, cycling, and driving. She measures how far each person travels in 30 minutes. Which experimental approach correctly follows the scientific method?
take the average of five measurements of the distances traveled by each person
report the distance traveled using different units of measurement for each person
make conclusions about which transportation mode required the most energy for each person
conduct investigations using different instruments to measure distance traveled by each person
David, who is at rest, observes Jack moving away from him to the left with a speed of 1 m/s. At the same time, David sees Mary move away from him to the right at a speed of 2 m/s.
At what speed does Mary see Jack moving?
0 m/s
1 m/s
2 m/s
3 m/s
9.8 m/s2
9.8 m/s
0 m/s2
0 m/s
less than the speed it had when thrown upwards.
more than the speed it had when thrown upwards.
the same as the speed it had when thrown upwards.
A textbook is dropped from a second floor window and falls to the ground. What happens to the velocity as the book falls to the ground
the velocity increases
the velocity decreases
the velocity remain constant
about 5 m/s.
about 10 m/s.
about 15 m/s.
a rate that depends on its initial speed.
A ball is thrown upward with an initial speed of 30m/s. At what location will the ball be moving upward with a speed of 20m/s
A
B
E
F
A ball is thrown upward with an initial speed of 30m/s. At what location will the ball be moving downward with a speed of 20m/s
A
B
E
F
Which of the dot diagrams best describe the motion of a free-falling object that is dropped from rest?
Diagram A
Diagram B
Diagram C
Using g = -10 m/s2:
A ball is tossed up from the ground at a speed of 40 m/s. How many seconds does it take to get to the top of its arc?
2
4
6
8
Two rocks with different size and mass are dropped from the same height. Which of the rock will reach the ground first?
greater rock
smaller rock
both reach the ground at the same time
Which of the following graphs best represents free fall motion?
Which best describes the horizontal motion of a projectile, assuming no air resistance?
Acceleration of -10 m/s2
Acceleration of -5 m/s2
An increasing acceleration every second
Constant velocity
Which best describes the vertical motion of a projectile, assuming no air resistance?
Acceleration of -10 m/s2
Accelerations of -5 m/s2
An increasing acceleration every second
Constant velocity
A marble traveling at 3 m/s rolls off the edge of a 1 m high table. What is its initial vertical speed?
-10 m/s
0 m/s
-3 m/s
-15 m/s
A soccer ball is kicked horizontally off a cliff. What information is needed to find the time to fall?
The height of the cliff
The initial speed of the ball
The mass of the ball
All of these
All free falling objects on Earth accelerate downward at a rate of __________.
9.8 m/s/s
-9.8 m/s
-9.8 m/s/s
9.8 m/s
When an unbalanced force acts on an object, the force ______________________.
changes the motion of the object
is cancelled by another force
does not change the motion of an object
is equal to the weight of the object
When two equal forces act in opposite directions on an object, they are called ______________________.
frictional force
balanced force
centripetal force
gravitational force
According to Newton’s second law of motion, force is equal to mass times ______________________.
inertia
weight
acceleration
direction
The resistance of an object to any change in its motion is called ______________________.
inertia
friction
gravity
weight
The picture is an example of Newton's...
1st Law
2nd Law
3rd Law
The resistance of an object to any change in its motion is called ______________________.
inertia
friction
gravity
weight
1st
Law of Motion
2nd
Law of Motion
3rd
Law of Motion
1st
Law of Motion
2nd
Law of Motion
3rd
Law of Motion
1st
Law of Motion
2nd
Law of Motion
3rd
Law of Motion
Isaac Newton developed these 3 laws concerning ______________.
Velocity.
Mass
Acceleration.
Motion
What term describes why objects resist changes in their state of motion?
gravity
inertia
force
friction
What explains a quantity that has BOTH speed and direction?
Inertia
Force
Speed
Velocity
The force that prevents a ball rolling on the ground from continuing on it's path forever is...
Friction
Gravity
Inertia
An inflated balloon released from rest moves horizontally.
The law that best explains this event is
Newton's 1st Law
Newton's 2nd Law
Newton's 3rd Law
Law of Gravity
A force is:
a push
a pull
both
neither
Which of the following is the correct position - time graph for an object moving with a constant velocity?
A truck accelerates at 5 m/s². Find the truck's mass if the driver applies a force of 425 N.
A bowling ball has a mass of 10 kg. If Andy applies a force of 35 N to the bowling ball, find the ball's acceleration.
If a 40 kg student is pushed in a rolling chair with a force of 30 N, what is the student's acceleration?
(a)
Vin Diesel is free-falling out of a plane, and he is accelerating at 10 m/s². If his mass is 57 kg, find Vin Diesel's weight. (ignore air resistance)
5.7 N
570 N
67 N
240 N
Arya applies a force of 20 N to push a box of books that Michaela and Nora packed. The box has a mass of 6 kg. What is the acceleration of the box of books?
A 31-kg mass is accelerated by a net force of 81 N. What is the acceleration of the mass?
2.6 m/s2
10 m/s2
0.39 m/s2
0.25 m/s2
4 m/s2
A truck with a mass of 1500 kg is accelerating at a rate of 5 m/s2. How much force did this require?
7500 N
300N
2800 N
500N
A batter hits a baseball with 500 N and the ball is accelerated at 25 m/s2. What is the mass of the ball?
2, 500 Kg
200 Kg
20 Kg
2 Kg
A 5 kg book rests on a table and falls with an acceleration of 9.8 m/s2. How much force did the book exert?
49 N
1.96 N
0.51 N
2 N
What are the units for mass?
Kg
m/s2
N
the tendency of an object to resist any change in its motion
inertia
centripetal force
fluid friction
static friction
rolling friction
What is the first step in the scientific method as illustrated in the image?
Experiment
Hypothesis
Gather information
State the problem/question
What should you do if the data does not support the hypothesis?
Draw conclusions
Share information with others
Form a new hypothesis and start the process again
Collect and analyze data again
In the scientific method, what is the step that involves testing the hypothesis?
Draw Conclusions
Experiment
Replicate
Question
What is the scientific method used to describe?
The way scientists gather and use information
The way scientists create new elements
The way scientists communicate with each other
The way scientists travel to space
What is the title of the graph shown in the image?
The Effects of Salt on Plant Growth
The Effects of Water on Plant Growth
The Effects of Sunlight on Plant Growth
The Effects of Soil on Plant Growth
Attempts to answer WHY something happens
Observation of WHAT does happen
Educated guess based on research
Information gathered through the senses
A guess or opinion made based on an observation
Part of an experiment that scientist keeps the same so as to not have erroneous data.
Observation
Experimental Group
Independent Variable
Controls/Constants
Measurable results of an experiment based on the variable that was changed.
Scientific Theory
Organism
Independent Variable
Dependent Variable
Erin is testing to see how different amounts of nitrogen infused in the soil will impact the height of her corn plants. She puts two corn plants into two pots. One is filled with nitrogen infused soil and the other is not. She puts the regular soil pot outside and the nitrogen infused plant in her bathroom. The corn in the regular soil grows to 7 feet tall and the corn in the nitrogen soil grows to 2 feet tall.
What is her independent variable?
Regular soil
Nitrogen infused soil
How tall the plants grow
The plant in the bathroom
Erin is testing to see how different amounts of nitrogen infused in the soil will impact the height of her corn plants. She puts two corn plants into two pots. One is filled with nitrogen infused soil and the other is not. She puts the regular soil pot outside and the nitrogen infused plant in her bathroom. The corn in the regular soil grows to 7 feet tall and the corn in the nitrogen soil grows to 2 feet tall.
What is the dependent variable?
The regular soil
The nitrogen infused soil
The height of the plants
The plant in the bathroom
Which of the following is qualitative
sour taste
27 degrees Celsius
the mass of a apple is 230 grams
the pH of rain water is about 5.5
A student wants to test the effects of different types of exercise on heart rate. What is the dependent/responding variable?
heart rate
type of exercise
time duration of exercise
time of the day exercise occurs
What is the dependent variable given on the line graph below?
Temperature (deg Celsius)
Time (seconds)
Type of substance being heated
Not enough information given to answer the question
The bar graph shows number of hours students spent doing homework. How many students spent 10 hours doing homework?
1
2
5
6
Out of a total of 60 people, what percent of them chose snickers as their favorite candy? Hint: % = (specific number / total) x 100
15%
20%
33.3%
50%
200 students were surveyed about how they got to school. Their answers in percentage of the total are shown on the pie chart. Out of 200, how many students ride their bike? (Hint: 100% means 200)
20 students
36 students
72 students
100 students
According to the bar graph shown, how many more students walk to compared to riding a car to school?
10
20
30
40
According to the bar graph below, what is the depending (responding) Variable?
Type of fruit
Number of students
Students vote for favorite fruit
Only one type of fruit
What is the dependent variable given on the line graph below?
Temperature (deg Celsius)
Time (seconds)
Type of substance being heated
Not enough information given to answer the question
Match each force to its arrow in the image
Weight
Drag
Thrust
Lift
You have engineered a cage to safely drop an egg. The egg is dropping from the bleachers at Barry Field. Label the force diagram with the appropriate forces
Air Resistance
Tension
Normal
Friction
Gravitational
Buoyant
A dolphin is swimming to the right and increasing in speed. Label the force diagram.
Normal
Magnetic
Tension
Applied
Friction
Buoyant
Gravitational
