A ball moves a horizontal circle....

AI Thread Summary
When a ball moves in a horizontal circle at a constant speed, the force acting on it changes its direction but not its speed. This is because the speed is a scalar quantity, which does not involve direction, while velocity is a vector that includes direction. The tension in the string provides the necessary centripetal force to maintain circular motion. Understanding the distinction between scalar speed and vector velocity is crucial in this context. Therefore, while the ball's speed remains constant, its velocity changes due to the continuous change in direction.
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Homework Statement



While a string is attached to a ball and the ball moves in a horizontal circle at a constant speed, does the force change both the direction and speed of the ball? Explain.

Homework Equations


No equations necessary.

The Attempt at a Solution


*I think* the force changes the direction but not the speed since the speed is constant?
 
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talknerdy2me said:

Homework Statement



While a string is attached to a ball and the ball moves in a horizontal circle at a constant speed, does the force change both the direction and speed of the ball? Explain.

Homework Equations


No equations necessary.

The Attempt at a Solution


*I think* the force changes the direction but not the speed since the speed is constant?
Correct. Are you familiar with the definitions of scalar speed and vector velocity?
 
berkeman said:
Correct. Are you familiar with the definitions of scalar speed and vector velocity?
Yes I am scaler = no direction and vector = with direction.
 
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