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WorksheetsPhysics Semester Review
Total questions: 45
Worksheet time: 1hrs 22mins
Kinetic energy is conserved __________ collisions.
only in elastic
only in inelastic
in all
never during
Momentum is conserved __________ collisions.
only in elastic
only in inelastic
in all
never during
The standard units for momentum are...
Newton-seconds, Ns.
Newtons per second, N/s
Newton meters, Nm
Newtons per meter, N/m
The direction of an object's momentum is always __________ its direction of motion
the same as
the opposite of
parallel to
perpendicular to
For an elastic collision of two masses, M1 and M2, with two velocities, V1 and V2, after the collision, their total momentum will be equal to:
M1V1+M2V2=M1V1'+M2V2'
M1V1+M2V2=M1V1+M2V2
M1V1+M2V2=(M1+M2)V3
M1V1+M2V2=(M1+M2)(V1+V2)
For an inelastic collision of two masses, M1 and M2, with two velocities, V1 and V2, after the collision, their total momentum will be equal to:
M1V1+M2V2=M1V1'+M2V2'
M1V1+M2V2=M1V1+M2V2
M1V1+M2V2=(M1+M2)V3
M1V1+M2V2=(M1+M2)(V1+V2)
Which of the following is defined as an energy transfer?
kinetic energy
work
potential energy
chemical energy
The unit of work is
watt
hertz
joule
pascal
A light plastic cart and a heavy steel cart are both pushed with the same force for a distance of 1.0 m, starting from rest. After the force is removed, the kinetic energy of the light plastic cart is ________ that of the heavy steel cart.
greater than
equal to
less than
can't say unless we know how big the force is
A major league pitcher can throw a baseball with a kinetic energy of 150 J. How much work must the pitcher do to the ball to give it that much KE?
150 J
0
Can’t tell without knowing the mass of the ball
A rock has 10 J of potential energy on top of a roof. If it is dropped and lands with only 8 joules of kinetic energy, how much work did air resistance do on the rock?
-18 J
-10 J
-8 J
-2 J
In the equation PE = mgh, what does the “g” mean?
Acceleration due to gravity
Force of gravity
Weight of the object
What is the unit for power?
what
watt
joule
Jewel-Osco
Which requires more work – a person walking up stairs or a person running up stairs?
walking
running
they require equal work
no work is required for either because the movement is vertical
Which requires more power – a person walking up stairs or a person running up stairs?
walking
running
they require equal power output
no power is required at all
A basketball that is dropped bounces back up to its original height. Pick the correct energy transformation from the point when it was dropped until it returns to the original height.
KE --> PE --> Elastic
PE --> KE --> Elastic --> KE --> PE
KE --> PE --> Elastic --> PE --> KE
Elastic --> PE --> KE --> Elastic
How much work is done on a 200-kg crate that is hoisted 2 m in a time of 4 s?
400 J
1000 J
1600 J
4000 J
How much power is required to raise a 200-kg crate a vertical distance of 2 m in a time of 4 s?
400 W
1000 W
1600 W
4000 W
If a charging elephant has kinetic energy, it must also have
potential energy
momentum
work
all of these
Definition: Crest
The highest point of a transverse wave
The lowest point of a transverse wave
The center of a transverse wave
The distance between two points on a wave
Definition: Trough
The center of a wave
The resting position of a wave
The lowest point of a transverse wave
The highest point of a transverse wave
What is the amplitude of a wave?
Where there is no wave movement
The distance the wave oscillates from it's resting position
A disturbance that transfers energy from one place to another
The distance between two corresponding parts of a wave
What is a medium?
The lowest point of a transverse wave
The size of a wave
The middle of a wave
Matter through which a wave travels
ex. police car siren sounding lower pitch after the car passes
If the wavelength of a wave increased, what would happen to the frequency?
decrease
increase
stay the same
What property of this wave is represented by the letter "A"
amplitude
crest
trough
wavelength
What type of interference is represented in this diagram?
Constructive
Destructive
Sound waves in musical instruments or tubes create standing waves that enhance which type of interference to make louder sounds?
Constructive
Destructive
Why the positive and negative charges show the above result?
Same charges attract to each other and different charges repel to each other
Same charges repel to each other and diffrerent charges attract to each other
