AP Physics 1 Orbit Quiz

Kepler's second law of planetary motion describes how planets move. Which statement correctly states it?

• A planet moves at a constant speed throughout its orbit.

• A planet moves faster in the part of its orbit farther from the sun and slower when it is closer.

• A planet moves in a perfectly circular orbit around the sun.

• A planet moves faster in the part of its orbit closer to the sun and slower when it is farther away.

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NGSS.HS-ESS1-4

What is the formula for centripetal force?

• Fc = mvr^2

• Fc = m/r^2v

• Fc = mv^2/r

• Fc = mr^2/v

How does centripetal force keep an object in circular motion?

• Centripetal force has no effect on the object's motion.

• Centripetal force decreases the object's mass.

• Centripetal force changes the direction of the object's velocity.

• Centripetal force increases the object's speed.

What is the formula for gravitational force?

• F = G * (m1 * m2) / r^2

• F = G * (m1 - m2) / r^2

• F = G * (m1 * m2) * r^2

• F = G * (m1 + m2) / r^2

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NGSS.HS-PS2-4

Explain how gravitational force affects the motion of objects in orbit.

• Gravitational force keeps objects in orbit by constantly pulling them towards the center of the orbit.

• Gravitational force pushes objects away from the center of the orbit.

• Gravitational force causes objects in orbit to move in a straight line.

• Gravitational force has no effect on the motion of objects in orbit.

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NGSS.HS-ESS1-4

NGSS.HS-PS2-4

What is orbital velocity?

• Velocity at which an object must travel to reach the moon

• Velocity at which an object must travel to escape Earth's atmosphere

• Velocity at which an object must travel to stay in orbit

• Velocity at which an object must travel to sink into the Earth's surface

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NGSS.HS-ESS1-4

NGSS.HS-PS2-4

What is the relationship between the mass of an object and its orbital velocity?

• The greater the mass of the object, the greater its orbital velocity.

• The greater the mass of the object, the lesser its orbital velocity.

• The mass of the object has no effect on its orbital velocity.

• The mass of the object and its orbital velocity are inversely proportional.

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NGSS.HS-ESS1-4

Two objects, A and B, orbit a planet with radii of R and 2R, respectively. Which object will take more time to complete its orbit?

• Object A

• Object B

• Both have equal period

• Cannot determine without knowing the object masses

Tags

NGSS.HS-ESS1-4

NGSS.HS-PS2-4

Two objects, A and B, orbit a planet with radii of R and 2R, respectively. Which object will have a higher orbital speed?

• Object A

• Object B

• Both have equal period

• Cannot determine without knowing the object masses

Tags

NGSS.HS-ESS1-4

NGSS.HS-PS2-4

Two objects, A and B, orbit a planet with radii of R and 2R, respectively. Which object will feel a greater gravitational acceleration?

• Object A

• Object B

• Both have equal period

• Cannot determine without knowing the object masses

Tags

NGSS.HS-ESS1-4

NGSS.HS-PS2-4