Newton's Second Law (Translational Dynamics)

AP Physics 1· difficulty 2/5

For an object with mass mm, in which case is the <strong>acceleration</strong> parallel to the net force?

  • A

    Only on Earth.

  • B

    Always.

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  • C

    Only when motion is along a straight line.

  • D

    Only when net force is zero.

Explanation

a=Fnet/m\vec a = \vec F_\text{net}/m — acceleration is always parallel to the net force, regardless of motion.

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