---
title: "A girl throws a stone from a bridge. Consider the following ways she might throw the stone. The speed of the stone as it leaves her hand is the same in each case.  Case A: Thrown straight up.  Case B: Thrown straight down.  Case C: Thrown out at an angle of 45° above horizontal.  Case D: Thrown straight out horizontally.  In which case will the speed of the stone be greatest when it hits the water below if there is no significant air resistance, assuming equal initial speeds?"
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url: "https://nerd-notes.com/ubq/22679/"
date_modified: "2024-04-30T04:58:57+00:00"
---

# A girl throws a stone from a bridge. Consider the following ways she might throw the stone. The speed of the stone as it leaves her hand is the same in each case.  Case A: Thrown straight up.  Case B: Thrown straight down.  Case C: Thrown out at an angle of 45° above horizontal.  Case D: Thrown straight out horizontally.  In which case will the speed of the stone be greatest when it hits the water below if there is no significant air resistance, assuming equal initial speeds?

A girl throws a stone from a bridge. Consider the following ways she might throw the stone. The speed of the stone as it leaves her hand is the same in each case.

Case A: Thrown straight up.

Case B: Thrown straight down.

Case C: Thrown out at an angle of 45° above horizontal.

Case D: Thrown straight out horizontally.

In which case will the speed of the stone be greatest when it hits the water below if there is no significant air resistance, assuming equal initial speeds?

- **A.** Case A
- **B.** Case B
- **C.** Case C
- **D.** Case D
- **E.** It will be the same speed in all cases.

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/22679/*