How does the gravitational force the Earth exerts on the sun compare to the gravitational force the sun exerts on the Earth?

Their gravitational forces are equal

The gravitational force the sun exerts on the Earth is larger

The gravitational force the Earth exerts on the sun is larger

There is not enough information

At what distance from the sun is the gravitational force due to the sun on an object zero?

It is not possible, the sun's gravity will always affect you

Once you get farther away than Pluto.

We do not know, since no man-made object has traveled that far

A car makes a left-hand turn. The front-seat passenger claims that she feels a sensation of being pulled outwards. This is best explained by which of the following?

The passenger has a natural tendency to move tangent to and out of the circular path.

While there may be a net inward force, there is still an outward force upon the passenger.

There is a centripetal force pushing the person “out the door.”

There is a centrifugal force which pushes the person “out the door.”

Two identical boats race around a semi-circular turn; entering the turn, both are traveling at the same velocity. Which boat has a greater acceleration in the turn?

They have the same acceleration

The force of gravitational attraction between the Sun and a planet is dependent upon ____. (choose 3)

the distance from the sun’s center to the planet’s center

For a satellite in circular orbit around the earth, the centripetal force is provided by

The gravitational pull of the earth

The speed of the object around the earth

The gravitational pull of the sun

Two masses, m 1 and m 2 = 2m 1 rest in a pail which is moved in a vertical circle of radius 1 m. The speed of the bucket at the top of the circle is 4 m/s. At the top of the circle

neither m 1 or m 2 will fall out.

both m 1 and m 2 will fall out.

When a person stands on a rotating merry-go-round, the frictional force exerted on the person by the merry-go-round is

opposite in direction to the frictional force exerted on the merry-go-round by the person.

greater in magnitude than the frictional force exerted on the person by the merry-go-round.

directed away from the center of the merry-go-round.

zero if the rate of rotation is constant.

The two spheres pictured above have equal densities and are subject only to their mutual gravitational attraction. Which of the following quantities must have the same magnitude for both spheres?

displacement from the center of mass

AP Physics Circular Motion

Authored by Charles Martinez

Physics

10th - 12th Grade

NGSS covered

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Centripetal force is...

the resultant force acting on a body moving at constant speed in a circle

the outwards force acting on a body moving at constant speed in a circle

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which represents the acceleration of the ball?

Which of the following depict the speed of the blowing ball?

Calculate the velocity of an object moved around a circle with a radius of 1.65 m and an acceleration of 3.5 m/s².

2.4 m/s

3.6 m/s

3.9 m/s

4.2 m/s

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Why do objects experience centripetal acceleration?

Because they are speeding up as they move in a circle

Because they are constantly changing direction and the net change is directed inward

Because they are constantly changing both speed and direction

Because when you have 100 people pedaling, you can speed up more easily.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the force that causes centripetal acceleration when a car goes around a curve?

Friction

Gravity

Normal

Tension

A test car moves at a constant speed around a circular track. If the car is 48.2 m from the track's center and has a centripetal acceleration of 8.05 m/s², what is the car's tangential speed?

19.7 m/s

5.99 m/s

0.17 m/s

388.01 m/s

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AP Physics Circular Motion

Centripetal force is...

Which represents the acceleration of the ball?

Which of the following depict the speed of the blowing ball?

Calculate the velocity of an object moved around a circle with a radius of 1.65 m and an acceleration of 3.5 m/s2.

Why do objects experience centripetal acceleration?

What is the force that causes centripetal acceleration when a car goes around a curve?

A test car moves at a constant speed around a circular track. If the car is 48.2 m from the track's center and has a centripetal acceleration of 8.05 m/s2, what is the car's tangential speed?

How does the force of gravity between two objects change when the distance between them is 5 times larger?

How does the gravitational force the Earth exerts on the sun compare to the gravitational force the sun exerts on the Earth?

At what distance from the sun is the gravitational force due to the sun on an object zero?

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Calculate the velocity of an object moved around a circle with a radius of 1.65 m and an acceleration of 3.5 m/s².

A test car moves at a constant speed around a circular track. If the car is 48.2 m from the track's center and has a centripetal acceleration of 8.05 m/s², what is the car's tangential speed?