Jeopardy! Newton’s 1 st and 2 nd Laws Physics I Spring 2005.

Jeopardy!

Newton’s 1st and 2nd Laws

Physics I

Spring 2005

Weight, Mass,

Volume

Net Force

Accele-ration

Physics History

Inertia Misc.

100 100 100 100 100 100

200 200 200 200 200 200

300 300 300 300 300 300

400 400 400 400 400 400

500 500 500 500 500 500

600 600 600 600 600 600

Weight, Mass, Volume100

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)


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)


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)


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


(b)


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 )


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 Force100

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


(a)

Net Force200

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


(b)

Net Force300

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 Force400

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 Force500

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


(c)

Net Force600

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


(d)

Acceleration100

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)

Acceleration200

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


(a)

Acceleration300

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)

Acceleration400

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)

Acceleration500

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

Acceleration600

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 History100

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 History200

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 History300

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 History400

The person who derived three important laws of motion after Galileo was

a. Albert Einsteinb. Margaret Thatcherc. Aristotled. Isaac Newtone. None of the above.

D

Physics History500

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 History600

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

Inertia100

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

Inertia200

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.

Inertia300

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)

Inertia400

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


(d)

Inertia 500How 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 600As 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 100A 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

Miscellaneous200

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

Miscellaneous300

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

Miscellaneous400

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


A

Miscellaneous500

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

Miscellaneous600

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

Jeopardy! Newton’s 1 st and 2 nd Laws Physics I Spring 2005.

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Transcript of Jeopardy! Newton’s 1 st and 2 nd Laws Physics I Spring 2005.