# Homework Help: Free Fall question

1. Jan 16, 2017

### Emily Falk

1. The problem statement, all variables and given/known data
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. 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??

Last edited by a moderator: Jan 16, 2017
2. Jan 16, 2017

### PeroK

Do you think if you threw it fast enough, then it wouldn't come down at all?

3. Jan 16, 2017

### Emily Falk

Obviously I do not believe that if you look at my predicted answer.

4. Jan 16, 2017

### PeroK

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?

5. Jan 16, 2017

### Staff: Mentor

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?