College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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A football is kicked from ground level with an initial velocity of 25 m/s at angle of 35° above the horizontal. Double the time it takes the ball to reach its maximum height to find how long it takes the ball to reach the ground. Which equation can you now use to determine how far the ball lands?
Group of answer choices
a. vfx=v0x+axt
b. vfx2=v0x2+2ax Δx
c. Δx =v0x t + ½ axt2
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Step 1
How far the ball lands (the horizontal distance) can be found using the equation c.
The gravitational force is acting in vertical direction, so .
The above equation becomes
Therefore, to determine how far the ball lands the equation used is c.
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