Centripetal Motion

Which represents the acceleration of the ball?

• A

• B

• C

• D

Tags

NGSS.MS-PS2-2

Which of the following depict the velocity of the ball?

• A

• B

• C

• D

Tags

NGSS.MS-PS3-1

Which of the following units is used for velocity?

• m/s²

• N

• J

• m/s

Planets A, B and C are identical. A and C have a giant moon orbiting them, while B has a lightweight artificial satellite orbiting it, as shown in the diagram. Which planet has the strongest gravitational interaction with its satellite?

• Planet A, because its moon is heavy and close to it.

• Planet B, because only a lightweight object can orbit without falling down.

• Planet C, because it can interact with a heavy object that is far away.

• All have the same gravitational attraction, because the planets are all the same mass.

Tags

NGSS.MS-PS2-4

NGSS.MS-ESS1-2

The period is the length of time to complete one full cycle. What is the period of a planet around the sun?

• The amount of times a planet orbits the sun in an Earth year

• The number of times the planet rotates in an Earth year

• The amount of distance a planet travels in an Earth year

• The time it takes for the planet to complete its orbit

Tags

NGSS.MS-ESS1-2

NGSS.MS-ESS1-1

Each planet below has the same mass (M) and an identical rocket orbiting at a distance (D). The darker the planet, the denser the material. Which rocket experiences a stronger force of gravity?

• A, higher density means stronger gravity when distance to center of the planet is the same.

• B, smaller distance to the surface of the planet means stronger gravity when mass of the planet is the same.

• Both the same, each planet has the same mass and the rocket is at the same distance from the center of the planet.

An object is moving in uniform circular motion as shown in the picture. Which arrow best represents the direction of the Net Force acting on the object?

• A

• B

• C

• D

A small sphere is swung in a vertical circle. Which of the following combinations represents the direction of the velocity and acceleration at the right-most point of the circle?

• 
• 
• 
• 

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

As you fall towards the earth while sky diving, which of the following statements are true regarding gravity? Check all that apply

• The Earth is pulling you downwards

• You are pulling the Earth upwards

• The force of gravity decreases as you fall towards the Earth

• The Earth's force on you is greater than your force on the Earth

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

When an object is experiencing uniform circular motion, its speed is constant. How can it have an acceleration if that's the case?

• The magnitude of the velocity is changing as it goes around the circle

• The direction of the velocity is changing as it goes around the circle

• There is no acceleration for objects experiencing uniform circular motion

• Objects moving in a circle have different acceleration rules than things moving in straight lines

Tags

NGSS.MS-PS2-2