Whirl a rock at the end of a string and it follows a circular path. If the string breaks, the rock tends to
A)continue in a circular path.
B)follow a straight-line path.
C)spiral inward.
D)fall straight downward.

Question

Quizplus · Accepted Answer

When the string breaks, the rock will continue in a straight line in the direction it was moving at the moment the string broke, due to the first law of motion (law of inertia).

Whirl a Rock at the End of a String and It