College Physics
1st Edition
ISBN: 9781938168000
Author: Paul Peter Urone, Roger Hinrichs
Publisher: OpenStax College
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Chapter 3, Problem 15CQ
For a fixed initial speed, the range of a projectile is determined by the angle at which it is fired. For all but the maximum, there are two angles that give the same range. Considering factors that might affect the ability of an archer to hit a target, such as wind, explain why the smaller angle (closer to the horizontal) is preferable. When would it be necessary for the archer to use the larger angle? Why does the punter in a football game use the higher trajectory?
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For a fixed initial speed, the range of a projectile is determined by the angle at which it is fired. For all but the maximum, there are two angles that give the same range. Considering factors that might affect the ability of an archer to hit a target, such as wind, explain why the smaller angle (closer to the horizontal) is preferable. When would it be necessary for the archer to use thelarger angle? Why does the punter in a football game use the higher trajectory?
Kara is setting up a tee-shirt cannon for a community event. The angle of the cannon can be adjusted, but all projectiles leave the cannon at 25 meters per second. If Kara sets the angle of the cannon to be 20.o above horizontal, what will be the range of the projectiles?
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Chapter 3 Solutions
College Physics
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- use proper vector notations.arrow_forwardPart 5 of 8 - Analyze The students must use their trial shot to find the muzzle speed. They need a plan. Read their discussion and decide who has the best plan. Cameron: Let's set the launcher to 45°. We will then just measure the distance between the launcher and where the ball lands. This is the maximum range so we find the muzzle speed using the range equation. Avi: The angle doesn't matter. Just launch the ball at any angle. Time how long it takes to land, and measure the distance between the launcher and the place where it lands. The muzzle speed is just that distance divided by the time. In choosing between the two plans, consider the reasoning behind each statement below. Then select all the answers that have good reasoning and the correct plan. O Cameron has made a mistake. There is nothing special about launching the ball at 45°. Avi's plan is correct. |Cameron is correct. The range equation works for this trial shot because the ball lands at the same height as the launcher.…arrow_forwardWhich of the following plot represents the velocity of the projectile along the vertical axis, Vy? Consider that the projectile was launched at some angle, say 45 degrees, above the horizontal. F Vy A B C D E AF. АВ. AE. DE. OC.arrow_forward
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- Don't Use Chat GPT Will Upvotearrow_forwardWhat do you need in order to determine the initial velocity of a projectile fired horizontally?arrow_forwardBilly-Joe stands on the Brooklyn Bridge kicking stones into the water below. If Billy-Joe kicks a stone with a horizontal velocity of 3.50 m/s, and it lands in the water a horizontal distance of 5.40 m from where Billy-Joe is standing, what is the height of the bridgearrow_forward
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