Problem 20: A teenager on a bridge throws a rock with an initial speed of 11.49m/s . The release point is a distance of 22.3m above the water below. Air resistance is negligible. Assume g=9.81m/s . Part (a) If the rock is thrown straight upward, with what speed will it hit the water? Part (b) If the rock is thrown horizontally, with what speed will it hit the water? Part (c) If the rock is thrown downward (not released from rest), with what speed will it hit the water? Part (d) In which scenario does the rock strike the water with the greatest speed? When the rock is thrown straight downward When the rock is thrown straight upward It does not matter which direction the rock is thrown. When the rock is thrown horizontally
Problem 20: A teenager on a bridge throws a rock with an initial speed of 11.49m/s . The release point is a distance of 22.3m above the water below. Air resistance is negligible. Assume g=9.81m/s . Part (a) If the rock is thrown straight upward, with what speed will it hit the water? Part (b) If the rock is thrown horizontally, with what speed will it hit the water? Part (c) If the rock is thrown downward (not released from rest), with what speed will it hit the water? Part (d) In which scenario does the rock strike the water with the greatest speed? When the rock is thrown straight downward When the rock is thrown straight upward It does not matter which direction the rock is thrown. When the rock is thrown horizontally
Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter2: Motion In One Dimension
Section: Chapter Questions
Problem 7OQ: A student at the top of a building of height h throws one ball upward with a speed of vi and then...
Question
Problem 20: A teenager on a bridge throws a rock with an initial speed of 11.49m/s . The release point is a distance of 22.3m above the water below. Air resistance is negligible. Assume g=9.81m/s .
Part (a) If the rock is thrown straight upward, with what speed will it hit the water?
Part (b) If the rock is thrown horizontally, with what speed will it hit the water?
Part (c) If the rock is thrown downward (not released from rest), with what speed will it hit the water?
Part (d) In which scenario does the rock strike the water with the greatest speed?
When the rock is thrown straight downward |
When the rock is thrown straight upward |
It does not matter which direction the rock is thrown. |
When the rock is thrown horizontally |
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