Pretest

Question 1

Which object would be considered to be in free fall?

Revolt · Accepted Answer

D: one with only gravity acting upon it

Question 2

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

Revolt · Accepted Answer

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

Question 3

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

Revolt · Accepted Answer

B: inertia

Question 4

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

Revolt · Accepted Answer

C: v is equal to the fraction with numerator 2 pi r and denominator cap t

Question 5

Why are satellites placed into orbit at least 150 kilometers above Earth’s surface?

Revolt · Accepted Answer

D: to avoid air resistance

Question 6

Which best explains why a satellite accelerates?

Revolt · Accepted Answer

A: It is always changing direction.

Question 7

Which best compares the satellites? Two satellites, X and Y, are orbiting Earth. Satellite X is 1 point 2 times 10 to the 6th power m from Earth, and Satellite Y is 1 point 9 times 10 to the 5th power m from Earth.

Revolt · Accepted Answer

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

Question 8

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

Revolt · Accepted Answer

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

Question 9

The orbital period of an object is 2 times 10 to the 7th power s and its total radius is 4 times 10 to the 10th power m

Revolt · Accepted Answer

4000\pi

Pretest Answers

More from this Course

TRY EDGENUITY HACKS