chynnecropper16
contestada

Which of the following statements is true?

A. Instantaneous acceleration is always changing.

B. An object that is accelerating is always changing direction.

C. An object at rest has an instantaneous acceleration of zero.

D. An object that is accelerating is always changing speed.

Respuesta :

AL2006

A. Instantaneous acceleration is always changing.
False.  Acceleration can be constant.

B. An object that is accelerating is always changing direction.
False.  The acceleration may be a change in speed only.

C. An object at rest has an instantaneous acceleration of zero.
True.  Neither the object's speed nor its direction is changing.

D. An object that is accelerating is always changing speed.
False.  The acceleration may be a change in direction only.

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