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WorksheetsIPC Unit 7-9 Review
Total questions: 42
Worksheet time: 28mins
Name
Class
Date
1.
Chenoa calculates that she is driving a 3000 kg vehicle at a constant velocity of 100 km/hr. She multiplies these values together. Using this information, what did she calculate?
a)
Momentum
b)
Force
c)
Acceleration
d)
Work
2.
The amount of work done over a certain amount of time is called _____.
a)
work
b)
force
c)
power
d)
density
3.
What is the mass of an object multiplied by its speed or velocity?
a)
Inertia
b)
net force
c)
momentum
d)
work
4.
Why is it more efficient to move a box up a ramp on wheels than sliding it?
a)
Because wheels reduce the pull of gravity
b)
Because rolling friction is weaker than sliding friction, so you do less work
c)
Because wheels increase the normal force on a box
d)
None of the above
5.
___ is the rate at which work is done.
a)
work
b)
power
c)
force
d)
speed
6.
The tendency of an object to remain at rest or in motion.
a)
Friction
b)
Velocity
c)
Acceleration
d)
Intertia
7.
Hayden invents a new device. He and his friends calculate that by applying 200 J of work to the machine, it will produce 300 J of work. When he describes the invention to John, John says that his calculation are incorrect. What is the best reason for John's belief that Hayden is mistaken?
a)
There is no way to accurately measure the work that comes out of a machine
b)
The work output of a machine can never be larger than the work input
c)
Joules are only used to measure force, not work
d)
You do work on a machine, but the machine can only put out force
8.
Jassidy is out with her friends. Misfortune occurs and Jassidy and her friends find themselves getting a workout. Thy apply a force of 1080 N to push the car 218 m to the nearest fuel station. Determine the work done on the car.
a)
4.95 J
b)
235, 000 J
c)
495 J
d)
235, 000 J
9.
___ is speed in a given direction
a)
Force
b)
Acceleration
c)
Velocity
d)
Momentum
10.
What is equal to the product of mass and velocity?
a)
Inertia
b)
Force of gravity
c)
weight
d)
momentum
11.
The pull of one object on another is called
a)
momentum
b)
acceleration
c)
friction
d)
gravity
12.
This is a force that keeps an object from moving against tother objects.
a)
gravity
b)
friction
c)
acclereation
d)
friction
13.
This is a change in velocity during a period of time.
a)
gravity
b)
friction
c)
acceleration
d)
momentum
14.
This is determined by the mass and velocity of an object.
a)
friction
b)
accleration
c)
momentum
d)
gravity
15.
The resistance to a change in motion
a)
inertia
b)
rate
c)
distance
d)
speed
16.
Speed is the ___ an object travels in a specific time.
a)
inertia
b)
rate
c)
distance
d)
speed
17.
You can determine this by measuring an object's position at different times.
a)
Inertia
b)
rate
c)
distance
d)
speed
18.
You can determine this by measuring an object's position at different time.
a)
distance
b)
rate
c)
speed
d)
inertia
19.
Distance/Time=
a)
speed
b)
distance
c)
rate
d)
inertia
20.
Kinetic energy is energy in ___.
a)
motion
b)
stored
c)
spent
d)
None of the above
21.
Potential energy is _____ energy.
a)
Kinetic
b)
motion
c)
spent
d)
stored
22.
A car or truck moving down the highway has ____ energy by virtue of its motion
a)
kinetic
b)
potential
c)
thermodynamic
d)
chemical
23.
If you measured the distance a desk moved across the floor when pushed by a student, and were told the total amount of work done, what other piece of information could you use this information to calculate?
a)
How long it took to move the desk
b)
How much force was applied
c)
The speed of the desk
d)
The acceleration of the desk
24.
In the formula for work, what does the f stand for?
a)
friction
b)
efficiency
c)
force
d)
food
25.
Which of the following conditions must be met for work to be done?
a)
A force must be applied
b)
There must be movement over the distance
c)
The direction of force and movement must be the same
d)
All of the above
26.
Which of the following best describes the concept of work?
a)
a force applied to an object
b)
a force moves an object through a distance
c)
the transformation of energy
d)
the rate at which energy is transformed
27.
Jestin built a ramp to help move stuff up into the of his scary van. If he uses the ramp to help hime do work, Which of the following will be true?
a)
His effort force and effort distance will remain the sam
b)
His effort seffort force will incrase and will decrease, his effort force will increase
c)
His effort distance will increase, his effort force will decrease
d)
His effort force will increase, his effort distance will decrease.
28.
Work is being done when
a)
you apply a force to an object
b)
an object is moving after you apply a force to it
c)
you exert a force that moves an object in the direction of the force
d)
you do something that is difficult
29.
Work is being done when
a)
you apply a force to an object
b)
an object is moving an object is moving after you afllied
c)
you exert a force that moves an object in the direction of the force
d)
you do something difficult
30.
The ability to do work
a)
Force
b)
Energy
c)
Speed
d)
Gravity
31.
The energy possessed by matter due to its motion is ___.
a)
potential energy
b)
kinetic engery
c)
static energy
d)
None of the above
32.
The ratio of work to time or the rate of work is known as
a)
Force
b)
Mechanical Advantage
c)
Efficiency
d)
Power
33.
Imagine an object held at some height above the ground. It is released and falls toward the ground. Ignoring air resistance or friction, which of the following must be true?
a)
Before it falls, all of its energy must be potential
b)
At the end of its fall, all of its energy must be converted to kinetic energy
c)
During its fall, the combination of its kinetic and potential energy must equal the amount of potential energy with which it started.
d)
All of the above
34.
What two things do you need to know in order to calculate work?
a)
Force and time
b)
Force and distance
c)
Force and power
d)
Energy and distance
35.
A water skier has a mass of 79 kg and accelerates at 1.4 m/s2. What is the net force acting on him?
a)
110.6 N
b)
36.4 N
c)
7.1 N
d)
11.43 N
36.
What is the mass of an object if it takes a net force of 32 N to accelerate it at a rat of 0.88 m/s2?
a)
110.6 kg
b)
36.4 kg
c)
7.1 kg
d)
11.43 kg
37.
A net force of 15 N is applied to a cart with a mass of 2.1 kg. What is the acceleration of the cart?
a)
110.6 m/s2
b)
36.4 m/s2
c)
7.1 m/s2
d)
11.43 m/s2
38.
What is the acceleration of a box weighing 666 N if a force of 777 N is applied to it?
a)
110.6 m/s2
b)
36.4 m/ss
c)
7.1 m/s2
d)
11.43 m/s2
39.
A car has a mass of 820 kg. It starts from rest and travels 41 m in 3.0 s. What is the net force applied to the car?
a)
3739.2 J
b)
32.15 J
c)
579.2 J
d)
120 J
40.
Heather lifts a full grocery sack weighing 210 N. What is the net force needed to accelerate the grocery sack upward at 1.5 m/s2?
a)
3739.2 N
b)
210 N
c)
32.15 N
d)
579.2 N
41.
If 2.2 lbs=1.0 kg, and Megan's progress weighs 130 llbs, what is her weight in newtons?
a)
59.1 N
b)
32.15 N
c)
120 N
d)
579.2 N
42.
What will be the final velocity of a 5.0 g bullet starting from rest, if a net force of 45 N is applied over a distance of 0.80 m?
a)
36 m/s 2
b)
120 m/s2
c)
579.2 m/s2
d)
32.15 m/s2
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