18
QuizMultiple Choice

One-Dimensional Motion and Forces — Test

Question 18 • Physics

According to Newton’s first law of motion, what will an object in motion do when no external force acts on it?

Answer
A
change direction
B
come to a stop
C
move at the same velocity
D
speed up

Explanation

Newton’s first law says that an object keeps its state of motion unless an external force acts on it. So an object already in motion continues at the same velocity, meaning its speed and direction remain unchanged. The correct choice is “move at the same velocity.”

AI-written and checked against the verified answer.

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