Adapted by T. Trimpe http://sciencespot.net/

Don’t Forget...

Contestants

Although they give answers in the

form of questions on the TV show,

you do not need to do this. You do need to write your answers on

your game board!Keep track of your score …Add points for correct

answers!

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Gravity Free Fall Momentum & Inertia

Forces, Friction & More

Newton’s Laws

Planets orbit the Sun, while the Moon and other satellites orbit the Earth. Such orbital

motion is the result of _______ and each satellite’s

forward inertia.

Gravity for $100

Gravity

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Gravity for $200

satellite length (m) altitude (km) mass (kg)

I. 5.5 825 692

II. 9.8 825 610

III. 4.4 825 840

IV. 5.6 825 903

Four weather satellites are orbiting the Earth at a height of 825 kilometers. Some characteristics of the satellites are collected in the table below.

The Earth’s gravity exerts the greatest force on which satellite?

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IV

Gravity for $300Two objects of constant mass, object W and object

X , are in outer space. In which of the situations below would the gravitational force between the

objects be greatest?

W. X.

Y. Z.

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x

Gravity for $400Four objects are orbiting a star along the same path. The objects are the same distance from the star and

have the masses shown below. The gravitational force of attraction is weakest between the star and

object ____.

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Y

Gravity for $500The force of gravity between two objects is

affected by which of the following:

Masses of the objects

Volumes of the objects

Densities of the objects

Distance between the objects

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Masses of the objects and the distance between the objects.

Free Fall for $100Air Resistance causes the speed of a

falling object to ______________.

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Decrease

Free Fall for $200Only in a vacuum or in space can an object be in _____________.

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Free Fall

Free Fall for $300A feather is in free fall when the force of

gravity:a. Is greater than the force of air

resistanceb. Is less than the force of air resistancec. Is equal to the force of air resistance

d. Is the only force acting on it

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d. Is the only force acting on it

Free Fall for $400Why do astronauts in space appear

weightless?

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They are in free fall.

Free Fall for $500A pitched baseball gets its vertical

motion from:a. The force of gravity

b. The force of the hand throwing it.c. Air resistance

d. Projectile Motion

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a. The force of gravity.

Newton’s Laws for $100Newton’s first law states that an

object in motion will stay in motion unless acted upon by an

unbalanced force. If you roll a ball across the floor, you put the ball in

motion, but after time, the ball stops. Does this violate Newton’s

first law? Why or why not?

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No, because the ball is acted upon by the

unbalanced force of friction

Newton’s Laws for $200Newton’s first law of motion states that an

object will keep a constant speed and direction unless acted upon by an

unbalanced force. To test this statement, Martin rolled a ball on a long, level street.

The ball did not bump into any object, but it eventually came to a stop. How is this

possible?

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The unbalanced force that caused the ball to

stop was friction.

Newton’s Laws for $300Gina is driving her car down the street. She has a teddy bear sitting on the back seat. A

dog runs in front of Gina’s car, so she quickly applies the brakes. The force of the brakes causes the car to stop, but the teddy bear

continues to move forward until it hits the car’s dashboard. The teddy bear did not stop at the

same time as the car because…

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Objects in motion tend to stay in motion

unless acted upon by an outside force.

Newton’s Laws for $400In a football game, a defensive lineman exerts a

force upon an offensive lineman, causing the offensive lineman to be accelerated backward at

2m/s2. If the offensive lineman’s mass were doubled, how much force would the defensive lineman have to apply to accelerate the offensive lineman 2m/s2

backward?a. The same amount

b. Half as muchc. Four times as much

d. Twice as much

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d. Twice as much

Newton’s Laws for $500Jodie sets two objects on a flat surface. Object A has a mass of 50g, while object B has a mass

of 250g. Jodie pushes both objects with the same force and watches them speed up. Which

object will speed up more?a. Object B speeds up more.

b. They speed up the same amount.c. Neither object speeds up.d. Object A speeds up more.

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d. Object A speeds up more.

Momentum & Inertia for $100Last minute Louis frantically tried to finish his

homework while his mom drove him to school. He placed his book on his lap and was reaching for a

pencil when his mom suddenly slammed on the brakes. Although Louis stayed buckled in his seat, his book flew forward and crashed into the front windshield. Which of the following was most responsible for the

book flying forward:a. Friction b. Displacement

c. Inertia d. Gravity

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c. Inertia

Momentum & Inertia for $200Reggie accidentally left his books on top of his car before he left for class.

The books stayed on top of his car while he was driving north on Oak Avenue. Then, when he made a sharp turn eastward onto Harris Lane, his books fell off the top of his car and onto the street. Which of the following

best explains why Reggie’s books fell?a. When Reggie’s car turned eastward, his books continued moving

northward, causing them to slide off the top of his car.b. The force of gravity caused Reggie’s books to slide across the top of his

car and fall.c. Heat energy from the sun caused Reggie’s books to slide off the top of

his car and fall.d. The people that live on Harris Lane hate reading, which caused the books

to fall off.

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A. When Reggie’s car turned eastward, his books continued

moving northward, causing them to slide off the top of his car.

Momentum & Inertia for $300

What must you know to find the momentum of an object?

a. Mass and accelerationb. Acceleration and force

c. Mass and velocityd. Velocity and time

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c. Mass and velocity

Momentum & Inertia for $400What happens when a moving bumper car

hits a bumper car at rest?a. The car at rest gains momentum.b. The ground under the cars gains

momentum.c. The moving car gains momentum.

d. Momentum is not transferred.

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a. The car at rest gains momentum

Momentum & Inertia for $500

When a train increases its velocity, its momentum:

a. Decreasesb. Remains unchanged

c. Increasesd. Is transferred to its surroundings.

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c. Increases

Forces, Friction & More for $100Sheila was coasting on her bicycle

across a flat surface and eventually came to a stop. This happened because ________ between the ground and the bicycle tires operated in the

_______ direction Shelia was traveling.

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Friction; opposite

Forces, Friction & More for $200The graph below shows how the position of an object

changes over time.

Assuming that the motion of the object remains the same, at what position will the object be when it has

traveled for a total of 6s?

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0 m

Forces, Friction & More for $300A ball is dropped from a tower. From whose reference point is the ball approaching the

observer?a. A person in an airplane flying above the tower.b. A person standing on the ground beneath the

towerc. A person on the ground driving rapidly away

from the tower.d. A person standing on top of the tower.

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b. A person standing on the ground beneath the

tower.

Forces, Friction & More for $400Charles rolled a ball across the floor and noticed that it stopped before reaching the other side of the room. A force applied to the ball in the opposite direction in

which it was rolling caused this to happen. What is the name of this

force?

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Friction

Forces, Friction & More for $500

___________ measures an object’s change in position per

unit time.

Speed

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How many points do you want to risk?

A tire hanging from a tree is at rest. The force of gravity is pulling down on the tire, and tension is pulling up on it. If the force of tension is equal to the force of gravity,

then:a. The tire will accelerate upward

b. The tire will swing toward the leftc. The tire will accelerate toward the ground

d. The tire will remain at rest

d. The tire will remain at rest.

And the winner is …