Answers 2003390-Physics 1 Honors Sem. 1 - PetersOrbital Motion

Orbital Motion Answers

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Enrique is given information about a satellite orbiting Earth.r = 3.8 × 108 mT = 18 days

convert the radius to kilometers

convert the orbital period to seconds

find the square root of the radius

find the square root of the orbital period

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What causes a satellite to move tangentially to a circular path?

air resistance

friction

inertia

gravity

A group of scientists is trying to launch an object into orbit, and the object is traveling at 6500 m/s. Which best explains why the object will not successfully orbit Earth?

There is not enough air resistance to keep the object moving.

There is not enough friction to keep the object moving.

The object is not traveling fast enough to match Earth’s curvature.

The object is traveling too fast to match Earth’s curvature.

Which would cause the greatest increase in the acceleration of a satellite?

a decrease in the radius and the tangential speed

an increase in the radius and the tangential speed

a decrease in the radius and an increase in the tangential speed

an increase in the radius and a decrease in the tangential speed

Once an object enters orbit, what keeps the object moving sideways?

inertia

gravity

centripetal force

air resistance

Which best explains why astronauts appear weightless when they are in a space shuttle orbiting Earth?

They are falling toward Earth at the same rate as the space shuttle.

They are falling toward Earth at a faster rate than the space shuttle.

They are too far from Earth to experience gravity.

They are too far from Earth to experience air resistance.

Which formula can be used to find the tangential speed of an orbiting object?

v =

v =

v = G

v = r

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decreases

increases

continuously fluctuates

stays constant

What is the only force acting on an object orbiting Earth?

air resistance

friction

inertia

gravity

Two satellites, X and Y, are orbiting Earth. Satellite X is1.2 × 106 m from Earth, and Satellite Y is 1.9 × 105 m from Earth.

Satellite X has a greater period and a faster tangential speed than Satellite Y.

Satellite X has a greater period and a slower tangential speed than Satellite Y.

Satellite X has a shorter period and a faster tangential speed than Satellite Y.

Satellite X has a shorter period and a slower tangential speed than Satellite Y.

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Orbital Motion Answers

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