12-91. The ball at A is kicked with a speed va = 80 ft/s and at an angle 6, = 30°. Determine the point (x, –y) where it strikes the ground. Assume the ground has the shape of a parabola as shown. *12-92. The ball at A is kicked such that 0, = 30°. If it strikes the ground at B having coordinates x = 15 ft, y = -9 ft, determine the speed at which it is kicked and the speed at which it strikes the ground. y -y B. y = -0.04x
12-91. The ball at A is kicked with a speed va = 80 ft/s and at an angle 6, = 30°. Determine the point (x, –y) where it strikes the ground. Assume the ground has the shape of a parabola as shown. *12-92. The ball at A is kicked such that 0, = 30°. If it strikes the ground at B having coordinates x = 15 ft, y = -9 ft, determine the speed at which it is kicked and the speed at which it strikes the ground. y -y B. y = -0.04x
Glencoe Physics: Principles and Problems, Student Edition
1st Edition
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Paul W. Zitzewitz
Chapter6: Motion In Two Dimensions
Section6.3: Relative Velocity
Problem 27PP
Related questions
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
Transcribed Image Text:12-91. The ball at A is kicked with a speed va = 80 ft/s
and at an angle 6, = 30°. Determine the point (x, –y) where
it strikes the ground. Assume the ground has the shape of a
parabola as shown.
*12-92. The ball at A is kicked such that 0, = 30°. If it
strikes the ground at B having coordinates x = 15 ft,
y = -9 ft, determine the speed at which it is kicked and the
speed at which it strikes the ground.
y
-y
B.
y = -0.04x
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