Free Fall Experiment: Predicting Ball's Maximum Height and Time

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Homework Help Overview

The discussion revolves around a free fall experiment involving a ball thrown upwards, focusing on the relationship between the initial speed of the throw and the time taken to reach maximum height. Participants are examining the implications of gravitational force on the motion of the ball.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants explore the validity of a friend's prediction regarding the time to reach maximum height based on the speed of the throw. There are attempts to clarify the role of gravity as the only force acting on the ball after it is thrown. Questions are raised about the relationship between initial speed and time to maximum height, and whether a sufficiently fast throw could prevent the ball from coming down.

Discussion Status

The discussion is ongoing, with participants questioning assumptions and seeking clarification on the relationship between speed and time. Some suggest that equations could be beneficial for understanding the concepts involved, while others emphasize the importance of gravity in the scenario.

Contextual Notes

Participants note that the original poster stated no equations are necessary, which has led to differing opinions on the usefulness of mathematical relationships in this context.

Emily Falk

Homework Statement


When throwing a ball, a student has a friend time how long it takes the ball to reach the maximum height. Before they start the experiment, the friend predicts: “If you throw the ball faster, the ball will reach the highest point in less time.”
Do you agree or disagree with this statement? Why or why not?

If you disagree, how would you correct it?

2. No equations necessary

The Attempt at a Solution


I predicted that it would not reach the highest point in less time because gravity would be the only force acting on the ball once the ball leaves his hand. Help??
 
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Emily Falk said:
1. When throwing a ball, a student has a friend time how long it takes the ball to reach the maximum height. Before they start the experiment, the friend predicts: “If you throw the ball faster, the ball will reach the highest point in less time.”
Do you agree or disagree with this statement? Why or why not?

If you disagree, how would you correct it?


2. No equations necessary

3. I predicted that it would not reach the highest point in less time because gravity would be the only force acting on the ball once the ball leaves his hand. Help??

Do you think if you threw it fast enough, then it wouldn't come down at all?
 
PeroK said:
Do you think if you threw it fast enough, then it wouldn't come down at all?
Obviously I do not believe that if you look at my predicted answer.
 
Emily Falk said:
Obviously I do not believe that if you look at my predicted answer.

Why is gravity being the only force important? I don't see any logic in your answer.

What is the relationship between initial speed and time to reach the highest point?
 
Emily Falk said:
Obviously I do not believe that if you look at my predicted answer.
His question is important. You stated in your OP that no equations are necessary. I suggest that you should indeed use equations to figure this one out. What is the equation for the time to maximum height based on initial vertical velocity?
 

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