Question

An object attached to one end of a string moves in a circle at constant speed. Which of the following is correct?
A. the object is accelerating as it moves
B. the object does not require a force to keep its state of circular motion
C. if the string breaks, the object will keep its circular motion
D. if the string breaks, the object will move radially away from the center of the circle

Answer 1

An object on one end of a string circles around at a steady speed. Then  the object is accelerating as it moves. A is the right answer. due to the absence of a directional component.

A scalar quantity must define speed. The total distance travelled and the total time needed to travel that distance are used to compute average speed in physics. Speed is the rate of change in location of an item, expressed in metres per second. Acceleration may only be achieved in one of two ways: by changing speed, direction, or both. If an object's acceleration rises over time, its velocity will also increase. A negative acceleration occurs when an object's velocity decreases over time.

Learn more about speed here

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