22
QuizMultiple Choice

Two-Dimensional Motion — Test

Question 22 • Physics I

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

Answer
A
air resistance
B
gravity
C
inertia
D
centripetal force

Explanation

Inertia keeps the object moving sideways at its current speed and direction. Gravity continually pulls it toward the body it orbits, bending that motion into a curved path. Air resistance would slow it down, and centripetal force describes the inward force provided by gravity—not what keeps it moving sideways.

AI-written and checked against the verified answer.

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