Physics Final review packet
3rd quarter
Newton’s Laws
Work, Power, Energy
Momentum
Circular motion
4th quarter
Magnetostatics
Electrostatics
Ohm’s Law
Series, parallel circuits
1) Find the work done by the man in the picture below.
2) Draw the Force Diagram for the girl in the wagon (assume the girl and wagon are one
and there is friction).
3) In the work equation, what is the relationship between Force and distance?
4) If the work equation, if force is tripled, what happens to the distance?
5) A vertical spring whose spring constant is 950 N/m is compressed .15 meters. How high
above the original position will the a .30 kg ball be launched? What upward velocity will
the ball have when released?
In the above rollercoaster, the cart has a mass of 5000kg, a height of 100 meters at point A, an
initial velocity of 2 m/s at point A, a velocity of 20 m/s at point B, a height of 0 meters at point
C, and a final GPE of 10,000 J at point D.
6) Find the Total Energy at point A, height at point B, velocity at point C, and the velocity
and height at point D.
7) If the velocity of the cart at point A were tripled, what would happen to the KE at point
A?
8) A young Mr. Wolke and his rabbit Fluffy are standing on a 110-kg raft in the middle of
Crystal Lake. Just as Mr. Wolke (55 kg) jumps off the raft with a horizontal velocity of 4
m/s due East, while Fluffy (22 kg) jumps off the raft horizontally with a velocity of 5.0
m/s due North. What is the resulting velocity of the raft?
9) A cue ball in billiards has a mass of .123 kg and an initial velocity of 4.7 m/s, strikes the
9 ball (mass .123 kg) and continues rolling forward at 1 m/s. What is the final velocity of
the 9 ball? What type of collision is this?
10) A cue ball in billiards has a mass of .123 kg and an initial velocity of 4.7 m/s, strikes the
9 ball (mass .123 kg) and rolls backwards at 1 m/s. What is the final velocity of the 9
ball? What type of collision is this?
11) In the momentum equation, what is the relationship between mass and velocity?
12) What is the maximum speed a 2500 kg cart can have when going over a 20 m hill?
13) A 2000 kg car rounds a circular turn of radius 20 m. if the road is flat and the coefficient
of friction between the tires and the road is .70, how fast can the car go without skidding?
14) Seeing people swinging from a rope over a lake during summer vacation, Mr. Wolke
stops to do some Physics. If the rope is 10 meters long, and the person’s mass is 85 kg,
what is the force felt by the rope as the person swings with a speed of 8 m/s at the
bottom?
15) A wild pilot wants to experience “weightlessness” at the top of a loop-the-loop maneuver.
If their speed is 200 m/s at the time, what radius must the loop have?
16) A Physics student (mass 60 kg) is riding a Ferris wheel for some summer physics fun.
The Ferris wheel rotates 4 times per minute, and has a diameter of 18 m. What is their
centripetal acceleration, and force felt at both the top and bottom?
17) A proton and electron are sitting on a beach .5 meters away from each other. What is the
gravitational force between them? What is the Coulomb force between them?
18) If the above distance is quadrupled, what would happen to each force? What if the
original distance was cut in half?
19) Draw in an ammeter and voltmeter in the above circuit to measure the total current and
voltage.
20) Which of the above resistors would shut down the entire circuit if it went out?
21) Find the individual currents, voltage drops and power if the above circuit was connected
to a 100V power supply.
22)
Find the direction of the force on the wire
23) If the above wire is 100 meters long, orange, and has a 20 Amp current running through
it, what would be the magnetic field strength if the magnetic force is 10 N?
24) Magnetic field lines go from which pole to which other pole?
25) Electric field lines go from which particle to which other particle?
26) How many electrons does it take to create a .5 Coulomb charge?
27) When you (neutral) touch a negative object, what type of particles are transferred and
from where to where?
28) When you (neutral) touch a positive object, what type of particles are transferred and
from where to where?
29) What is the weight of a 20N object on earth? What is the mass of the object on the moon?
30) What is the purpose of air bags in a car? Use physics terms to describe.
31) How much work is done holding a 10 kg baby up in the air?
32) Describe the process of inducing a negative charge on a neutral object.
33) What are the two types of motion?
34) A 10 N force is acting on an electron. What is the electric field intensity?
35) Which circuit (series or parallel) has a higher current? Which has a higher resistance?
36) Draw the magnetic field for the two situations below:
37) Can you have a constant speed but not a constant velocity? If so, when.
38) What keeps a car moving in a circular turn on a level surface?
39) Draw and label the Fc, ac, and velocity if the satellite is moving clockwise.
40) Watt is the power of a 70 kg student who runs up the 5 meter stairs in 6 seconds?
41) The ability to transfer energy from one form or object to another is______________.
42) When a force and the distance the force acts are at what angle to each other is the work zero?
43) A simple machine reduces the amount of __________ by increasing _______________.
44) Energy due to the position above the ground is____________________.
45) Energy due to the stretching or compression of a spring is ________________________.
46) Energy due to motion is _______________________.
47) Mu only changes when what changes?
48) Weight is measure in___________.
49) Mass is measured in ______________________.
50) A boxer hits a punching bag with 80 N of force. What is the force that the bag hits the boxer
with?
51) The force of friction works in what direction compared to the direction of motion?
52) A force of 100N is applied to an object, while the force of friction is 60 N. What is the net force?
53) A constant velocity means the forces acting on an object are________________________.
54) When you go to another planet, which of the following will change: Mass, weight