Қаріп өлшемі
Жұмыс парақтарыWCAS Science
Total сұрақ: 81
Worksheet time: 48mins
The process of changing energy from one form to another is...
Transformation
Transfer
Transmission
Transportation
The law of conservation of energy states that energy can neither be destroyed nor created. According to this law which of these equations is correct?
Energy in=energy out
E=MC2
KE=PE
Energy in=energy out
Name the five forms of Kinetic energy:
Mechanical thermal
radiant electrical
sound
all of them
Name the four forms of potential energy:
Mechanical Chemical nuclear sound
Mechanical Chemical nuclear electrical
Mechanical Chemical sound electrical
none of these
Name the form of energy that takes place with wind
thermal
radiant
mechanical
sound
Name the form of energy that takes place with fire
chemical
sound
radiant
thermal
Name the form of energy that takes place with a microwave
radiant
chemical
sound
mechanical
Name the form of energy that takes place with talking
sound
nuclear
radiant
chemical
Name the form of energy that takes place with lightning
chemical
electrical
thermal
nuclear
Name the form of energy that takes place with with a bow and arrow
thermal
chemical
mechanical
sound
Name the form of energy that takes place with fuel
radiant
sound
chemical
thermal
Name the form of energy that takes place with fusion of atoms
nuclear
sound
chemical
radiant
Select all the energy transformations that occur in an hair dryer
Mechanical KE
electrical
sound
thermal
Select all the energy transformations that occur in an electric keyboard
electrical
sound
Mechanical KE
nuclear
Select all the energy transformations that occur in during photosynthesis
chemical
radiant
Nuclear
thermal
Select all the energy transformations that occur in an hydropower dam
electrical
Mechanical KE
chemical
Mechanical PE
Select all the energy transformations that occur in an hot air ballon
Chemical
Mechanical KE
sound
Thermal
Which runner won the race?
Runner A
Runner B
Runner C
shelton is a potato
Accelerating then decelerating
Accelerating then traveling at constant speed
Decelerating then traveling at constant speed
Traveling at constant speed then decelerating
During which segment did the car come to a complete stop?
Segment A to B
Segment B to C
Segment C to D
Segment D to E
Which runner ran at a constant speed?
Runner A
Runner B
Runner C
Shelton is a potato
1625 m
1500 m
1125 m
1000 m
Which runner had a bad start to his race?
Runner A
Runner B
Runner C
Shelton is a potato
Describe the motion of the object in the diagram.
The object moved at a constant speed, then stopped, returned to the beginning and moved back in the original direction very fast at a constant speed.
The object is accelerating at an increasing rate, and then moving at a constant velocity/speed.
Estimate how many hours passed when the trip was at 100 km.
About 10 to 15
About 5 to 10
About 18-23
About 16-17
During which segment did the car travel the fastest?
Segment A to B
Segment D to E
Segment C to D
Segment B to C
During which segment did the car travel back towards its starting position?
Segment A to B
Segment B to C
Segment C to D
Segment D to E
Describe the motion of the object in the diagram.
The object is accelerating at an increasing rate.
The object is moving at a constant velocity/speed.
Connor likes laney smith
Carson shelton likes izzy marcum
Which runner accelerated the fastest at the start of the race?
Runner A
Runner B
Runner C
same.
In this velocity vs. time graph, the person at point C:
Not enough information to determine.
has positive acceleration.
has negative acceleration.
has zero acceleration.
A horizontal (flat) line on a velcoty vs. time graph shows _______ acceleration.
positive
changing
zero
negative
3 m/s north in an example of a(n):
Velocity
Acceleration
Time
Speed
What does the slope of a distance vs. time graph tell you?
The total distance traveled
The time it took for the object to travel
The acceleration
The speed of the object
Which time interval has the greatest speed?
0 – 1 s
1 – 2 s
3 – 4 s
4 – 6 s
What does the slope of this graph tell you?
distance
speed
time
acceleration
When a car traveling at 30 m/s hits the gas pedal, it speeds up to 65 m/s in 3.5 sec. What is the car’s
acceleration during that time?
20 m/s2
5 m/s2
10 m/s2
15 m/s2
Motion is a change in:
position
velocity
speed
time
A group of bike riders took a 4 hour trip. During the first 3 hours, they traveled a total of 50 km, but during
the last hour they traveled only 10 km. What was the group’s average speed for the entire trip?
60 km/hr
40 km/hr
30 km/hr
15 km/hr
In this velocity vs. time graph, the person at point B:
not enough information to determine.
has positive acceleration
has zero acceleration
has negative acceleration.
An indicator that orients you when describing motion is called the:
speed
point of motion
reference point
time
What is true about a car with constant velocity?
it has a positive acceleration
it has a negative acceleration
it has a changing direction
it has zero acceleration
How long will it take an object traveling at 25 m/s to reach a distance of 125 meters?
0.2 min
5 s
5 m
0.2 s
What is the average speed of the bicyclist’s ride?
45 m/s
45 mi/hr
7.5 m/s
7.5 mi/hr
Acceleration is a rate of change of _____.
position
speed
time
velocity
If you ride your bike down a straight road for 500 m then turn around and ride back to your starting point, your distance is____ your displacement.
Can't determine
Greater than
Equal to
Less than
The horses on a carousel or merry-go-round are accelerating because ____.
the speed of the horses is constantly increasing
the speed of the horses is constantly decreasing
the direction of the horses’ motion is constantly changing
the travel time is different for every ride
A high-speed train travels with an average speed of 227 km/hr. The train travels for 2 hrs. How far does the train travel?
454 km
0.0088 km
113.5 km
225 km
The speed you read on a speedometer is___.
Velocity
Instantaneous speed
Average speed
Constant speed
The graph below represents the change in velocity of four cars over a period of 10 hours. Which line represents the car with the greatest acceleration?
Car A
Car B
Car C
Car D
Find the acceleration of a car that goes from 32 m/s to 96 m/s in 8.0 s.
-8.0 m/s2
8.0 m/s2
12 m/s2
4.0 m/s2
At what point is the rate of change of velocity the greatest?
A
B
C
Not enough information to determine
Which statement about the movement of an object with zero acceleration could be true?
the object is changing direction
the object is slowing down
the object is speeding up
the object is moving at a constant speed
In this velocity vs. time graph, the person at point A:
has zero acceleration.
Not enough information to determine.
has positive acceleration
has negative acceleration.
What variable is on the Y-axis on this graph?
motion
velocity
acceleration
time
A cross-country runner runs 10 km in 40 minutes. What is his average speed?
30 km/min
4 km/min
400 km/min
0.25 km/min
A car travels a distance of 98 meters in 10 seconds. What is the average speed of the car?
4.9 m/s
9.8 m/s
49 m/s
98 m/s
A skateboarder is traveling 12 m/s down a hill. The skateboarder crashed and slid to a stop in 2.0 seconds.
What was the rider’s acceleration?
6 m/s2
-6 m/s2
0.17 m/s2
-0.17 m/s2
What is the instantaneous speed at 5 s?
30 m/s
30 mi/hr
6 m/s
5 mi/hr
A car moves around a wide turn going 45 mi/hr the whole time. The car has a constant:
Velocity
direction
acceleration
speed
Which of the laws of motion states, "To every action there is an equal but opposite reaction?"
Newton's 1st Law
Law of Conservation of Momentum
Newton's 2nd Law
Newton's 3rd Law
Consider a watermelon that starts from rest and drops straight down from a tall building. Air resistance can be ignored. Which statement about the watermelon's motion is FALSE?
The watermelon has a positive acceleration
The watermelon falls at a constant velocity
The watermelon speeds up as it falls
The watermelon's acceleration due to gravity is 9.8 m/s2
A person is on a paddleboard. The person exerts a force on the water with the paddle, causing the water to move. The paddleboard also moves, but in the opposite direction. Which statement best explains why this happens?
Newton's second law of motion
inertia
action and reaction forces
Law of Conservation of Momentum
Momentum describes
How much velocity changes in a given amount of time
The tendency of an object to resist a change in motion
The balanced forces on a falling object with a constant speed
How much force is needed to change an object's motion
Which of the following factors does NOT affect air resistance?
Speed
spin
shape
size
If a bicyclist has a mass of 70 kg and a velocity of 25 m/s, what is the momentum of the bicyclist? Use the formula: p=mv.
1,750 kg*m/s
1200 kg*m/s
680 kg*m/s
2100 kg*m/s
A 98 kg man is accelerating forward at a rate of 1.2 m/s2. What is the unbalanced force necessary to produce this movement?
117.6 N
102.2 N
139 N
88.4 N
Carl and Juan are playing catch. Carl throws a fastball to Juan and it hurts Juan's hand. Why is this the case?
Greater the mass, the less the force
Greater the mass, greater the acceleration
Greater the acceleration, greater the force
Greater the acceleration, the less the force
A runner has a speed of 25 m/s. They see the finish line and speed up to 30 m/s. This happens in 5 seconds. IF the runner has a mass of 75 kg, with what force did the runner cross the finish line?
75 N
85 N
65 N
55 N
Which of the following items has the most inertia?
a water bottle
your textbook
a pencil
the teacher
A 700 kg car is driving with an acceleration of 5 m/s2down the interstate. What is the force required to accelerate the car?
14 N
0.071 N
3,500 N
650 N
What is the weight (in Newtons) of a person with a mass of 95 kg?
104.8 N
931 N
95 N
9.7 N
An object has 16 N of force being applied to the right, 16 N of force being applied downward. What is the net force on the object?
4 N downward
32 N
36 N
16 N to the left
What is the mass of an object that has an acceleration of 2.63 m/s2 when an unbalanced force of 112 N is applied to it? Use the formula M=F/a
42.6 kg
43 kg
41.2 kg
40.7 kg
An object will move at a constant velocity unless an unbalanced force acts upon it.
Newton's 1st law
Gravity
Newton's 2nd law
Newton's 3rd law
Push or pull one body exerts on another.
Weight
Momentum
Inertia
Force
The highest velocity a falling object will reach.
Force
Inertia
Terminal velocity
net force
Tendency of an object to resist changes in motion.
inertia
weight
gravity
net force
The attraction any two objects have on one another.
gravity
force
Newton's 1st law
net force
To every action, there is an equal and opposite reaction.
Newton's 1st law
Newton's 2nd law
Momentum
Newton's 3rd law
A net force acting on an object causes the object to accelerate in the direction of the net force.
Newton's 2nd law
Newton's 3rd law
Newton's 1st law
momentum
8. Related to the amount of force needed to change an object’s motion.
momentum
force
terminal velocity
gravity
