Which of the following describes a car that is accelerating? A car going around a circular track at a steady 30 miles per hour A car driving on a straight uphill road at a steady 30 miles per hour.

A car going around a circular track at a steady 30 miles per hour.

Explanation:

Acceleration occurs anytime an object's speed increases or decreases, or it changes direction. Much like velocity, there are two kinds of acceleration: average and instantaneous.

A car going around a circular track at a steady 30 miles per hour changes direction as its moves in that circular path that is, even when a body has constant velocity, it changes direction and velocity is a vector quantity which depends on direction.

A car driving on a straight uphill road at a steady 30 miles per hour. Since it is constant, no change in velocity, no acceleration. Therefore acceleration is said to be zero,