The range of a projectile fired at an angle ? with the horizontal and with an initial velocity of v0 feet per second is r = 1 32v02 sin(2?) where r is the horizontal distance (in feet) the projectile travels. An athlete throws a javelin at 75 feet per second. At what angle must the athlete throw the javelin so that the javelin travels 145 feet? (Assume ? < 45°. Round your answer to two decimal places.)
The range of a projectile fired at an angle ? with the horizontal and with an initial velocity of v0 feet per second is r = 1 32v02 sin(2?) where r is the horizontal distance (in feet) the projectile travels. An athlete throws a javelin at 75 feet per second. At what angle must the athlete throw the javelin so that the javelin travels 145 feet? (Assume ? < 45°. Round your answer to two decimal places.)
University Physics Volume 1
18th Edition
ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:William Moebs, Samuel J. Ling, Jeff Sanny
Chapter4: Motion In Two And Three Dimensions
Section: Chapter Questions
Problem 19P
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The range of a projectile fired at an angle ? with the horizontal and with an initial velocity of
v0
feet per second is
r =
v02 sin(2?)
1 |
32 |
where r is the horizontal distance (in feet) the projectile travels. An athlete throws a javelin at 75 feet per second. At what angle must the athlete throw the javelin so that the javelin travels 145 feet? (Assume ? < 45°. Round your answer to two decimal places.)
? = °
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