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6 June, 10:34

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.

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  1. 6 June, 11:04
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    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,
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