Transcript (e) None of the above

Jeopardy!
Newton’s 1st and 2nd Laws
Physics I
Spring 2005
Weight, Net Accele Physics Inertia
Mass, Force -ration History
Volume
Misc.
100 100 100
200 200 200
100 100 100
200 200 200
300 300 300
300 300 300
400 400 400
400 400 400
500 500 500
600 600 600
500 500 500
600 600 600
Weight, Mass, Volume
100
Which has more mass - a kilogram of feathers or
a kilogram of iron?
(a) the feathers
(b) the iron
(c) impossible to determine
(d) the feathers & iron have equal masses
(e)
none of the above
(d)
Weight, Mass, Volume
200
Compared to a 2-kg steel block, an 8-kg steel block has
(a) 4 times as much volume
(b) 1/4 as much inertia
(c) 1/4 as much mass
(d) 1/4 as much volume
(e) none of the above
(a)
Weight, Mass, Volume
300
A 2-kg bag of flour has a weight (on earth) of about
20 N. A 2-kg bag of lead shot will have a weight (on
earth) of
(a) unknown size; not enough data present
(b) about 20 N
(c) greater than 20 N
(d) less than 20 N
(e) none of the above
(b)
Weight, Mass, Volume
400
Two liters of apple cider have the same volume as
(a) two grams of apple juice
(b) two liters of molten gold
(c) two kilograms of cement
(d) two kiloliters of water
(e) none of the above
(b)
Weight, Mass, Volume
500
When a piece of aluminum foil is crushed into a ball,
which quantity changes?
(a) mass
(b) weight
(c) volume
(d) inertia
(e) none of the above
(c )
Weight, Mass, Volume
600
What is the mass of a 0.8-kg tomato on the moon?
(The moon's acceleration due to gravity = 1.7 m/s per
second)
(a) 0.8 kg
(b) 8.0 N
(c) 1.36 N
(d) 0.8 N
(e) None of the above
(a)
Net Force
100
Forces of 25 N and 10 N are acting on an object in the
same direction. What is the net force on the object?
(a) 35 N
(b) 15 N
(c) 250 N
(d) 2.5 N
(e) none of the above
(a)
Net Force
200
Forces of 70 N and 35 N are acting on an object in
opposite directions. What is the net force on the object?
(a) 105 N
(b) 35 N
(c) 2450 N
(d) 2.0 N
(e) none of the above
(b)
Net Force
300
If the force acting on a cart doubles, what happens to
the cart's acceleration?
(a) it quadruples
(b) it doubles
(c) it halves
(d) it quarters
(e) none of the above
(b)
Net Force
400
Homer Simpson, in top physical condition, is
rolling along on skates with a certain net force,
carrying a heavy box. He drops the box,
effectively reducing his mass by half. What
happens to his acceleration?
(a) doubles
(b) halves
(c) increases by 2 m/s2
(d) can't tell from the given information
(e) none of the above
(a)
Net Force
500
A four-engine jet accelerates down the runway at 12
m/s2. If an engine fails, what acceleration is produced
by the remaining three engines?
(a) 15 m/s2
(b) 12 m/s2
(c) 9 m/s2
(d) 6 m/s2
(e) none of the above
(c)
Net Force
600
Calculate the horizontal force that must be applied to
produce an acceleration of 1 g (10 m/s2) for a 1-kg puck
on a horizontal friction-free air table.
(a) 1.0 N
(b) 0.1 N
(c) 100 N
(d) 10 N
(e) none of the above
(d)
Acceleration
100
Calculate the acceleration of a 2000-kg single-engine
airplane just before takeoff when the force from each
engine is 500 N.
(a) 4 m/s2
(b) 0.25 m/s2
(c) 1 000 000 m/s2
(d) 1 500 m/s2
(e) none of the above
(b)
Acceleration
200
In the state soccer championship finals, Ariane
kicks a 0.5-kg soccer ball with a force of 100.0
N (to score and win!). How much does she
accelerate the soccer ball from rest in the
process?
(a) 200.0 m/s2
(b) 50.0 m/s2
(c) 99.5 m/s2
(d) 0.005 m/s2
(e) none of the above
(a)
Acceleration
300
A force of 500 N is required to pull a 85-kg crate along a
floor at constant velocity of 10 m/s. What is the
frictional force acting on the cart?
(a) 5000 N
(b) 850 N
(c) 425 N
(d) 500 N
(e) none of the above
(d)
Acceleration
400
A tennis ball and a solid steel ball the same size
are dropped at the same time. Which ball has the
greater force acting on it?
(a) the tennis ball
(b) the steel ball
(c) they both have the same force acting on
them
(b)
Acceleration
500
A tennis ball and a solid steel ball the same size are
dropped at the same time. In the absence of air
resistance, which ball has the greater acceleration?
(a) the tennis ball
(b) the steel ball
(c) they both have the same acceleration
Acceleration
600
If Anna Littical throws a rock downward, and air
resistance is negligible, then the acceleration of the
rock compared to being dropped is
(a) more
(b) the same
(c) less
(d) sometimes more, sometimes less
(e) none of the above
(b)
Physics History
100
Imposed motion, or the result of forces that push or pull,
was thought by Aristotle to be
(a) Natural motion
(b) Accelerated motion
(c) Constant motion
(d) Violent motion
(e) None of the above
(d)
Physics History
200
Contrary to the popular belief in his time, Copernicus
theorized that the earth
(a) Is the center of the solar system.
(b) Moves in a straight line.
(c) Revolves around the sun.
(d) Does not move.
(e) None of the above.
(c)
Physics History
300
Galileo found that a ball rolling down one inclined plane
would roll how far up another inclined plane? (He could not
ignore friction!)
(a) To nearly the same height as where it originally started
(b) To nearly twice the height as where it originally started
(c) To nearly half its original height
(d) To about one quarter its original height
(e) None of the above
(a)
Physics History
400
The person who derived three important laws of motion
after Galileo was
a. Albert Einstein
b. Margaret Thatcher
c. Aristotle
d. Isaac Newton
e. None of the above.
D
Physics History
500
Why was Galileo placed under house arrest
toward the end of his life?
(a) He was convicted of heresy.
(b) He was suspected of inciting unrest.
(c) He was too ill to be placed in a real prison.
(d) He was convicted of theft of another’s ideas.
(e) None of the above.
A
Physics History
600
Copernicus published his ideas in Latin. Galileo published
these same ideas in Italian. Why was Galileo’s offense
deemed more serious?
A. Copernicus didn’t publish his ideas until just before he
died.
B. Copernicus’ family was more influential in Poland than
Galileo’s was in Italy.
C. More people in Italy could read Italian than could read
Latin.
D. Galileo’s ideas were also presented in pictures, which
everyone could understand.
C
Inertia
100
The law of inertia states that an object
(a) at rest will remain at rest unless acted on
by an outside force.
(b) Will continue moving at the same velocity
unless an outside force acts on it.
(c) Will continue moving in a straight line
unless an outside force acts on it.
(d) All of the above a - c.
(e) None of the above a - c.
D
Inertia
200
The law of inertia applies to
(a) moving objects.
(b) Objects at rest.
(c) Both moving & nonmoving objects.
(d) moving objects sometimes, nonmoving objects
sometimes - depending on their acceleration.
(e) None of the above.
Inertia
300
1 After a cannon ball is fired into frictionless space,
the amount of force needed to keep it going equals
(a) twice the force with which it was fired.
(b) The same amount of force with which it was
fired.
(c) One-half the force with which it was fired.
(d) Zero, since no force is necessary to keep it
moving.
(e) None of the above.
(d)
Inertia
400
Suppose you place a ball in the middle of a wagon and
then accelerate the wagon forward. The motion of the
ball relative to the ground will be
(a) forward
(b) backward
(c) the same as its motion relative to the wagon
(d) motionless
(e) none of the above
(d)
Inertia 500
How do seatbelts help prevent death or serious injury
for passengers involved in car accidents?
(a) they don't; they're a sales gimmick and an
excuse for another ticket to be written
(b) since inertia causes the car to move forward, the
seatbelt keeps your body from snapping forward
(c) the seatbelt keeps your body from continuing its
motion upon collision.
(d) The seatbelt forces your body backward into the
protective seat.
(e) None of the above.
C
Inertia 600
As a skier jumps off the end of the slope, the earth is
spinning below her at about 1000 miles/hour. Why doesn't
the jumper land in the next county?
(a) the jumper aims herself in order to cancel the effect of
the earth's rotation
(b) since the earth pulls down on the jumper, the jumper
pulls back equally on the earth so that the earth's pull is
balanced
(c) since the jumper was also traveling with the earth at
1000 miles/hour, she will be traveling just as fast as the
earth
(d) since she is in the air only a short while, the length of
the landing spot assures her of a safe, powdery landing
(e) none of the above
C
Miscellaneous 100
A bullet and a cannonball are speeding toward you
with the same constant velocities in gravity-free
space. Which statement is true?
(a) The cannonball will hurt more since it has
more inertia.
(b) The impacts will be equal since each has a
weight of zero in space.
(c) The bullet will hurt more since it's smaller and
therefore has more acceleration.
(d) The impacts cannot be compared since exact
masses and velocities are not known.
(e) None of the above are true.
A
Miscellaneous
200
Pressure is defined as
(a) distance per unit time
(b) force per unit time
(c) force per unit area
(d) velocity per unit time
(e) none of the above
C
Miscellaneous
300
An unchanging force acts on an object of fixed mass.
What type of motion is produced?
(a) none
(b) constant velocity
(c) constant acceleration
(d) can't tell from the given information
(e) none of the above
C
Miscellaneous
400
In lab, as we decreased the mass on the cart and kept
the force constant, the acceleration
(a) increased
(b) decreased
(c) remained the same
(d) can't tell from the given information
(e) none of the above
A
Miscellaneous
500
The acceleration produced by a net force on an
object is
(a) directly proportional to the magnitude of the
net force
(b) in the same direction as the net force
(c) inversely proportional to the mass of the
object
(d) All of the above a - c
(e) None of the above a - c
A
Miscellaneous
600
Which of the following would exert the most
pressure on the ground?
(a) a woman standing in running shoes
(b) the same woman standing in high-heel
shoes (not platforms)
(c) the same woman standing on skis
(d) the same woman standing in snowshoes
(e) none of the above
B