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12-91. The ball at A is kicked with a speed va = 80 ft/s and at an angle 64 = 30°. Determine the point (x,-y) where it strikes the ground. Assume the ground has the shape of a parabola as shown.

12-91. The ball at A is kicked with a speed va = 80 ft/s and at an angle 64 = 30°. Determine the point (x,-y) where it strikes the ground. Assume the ground has the shape of a parabola as shown.

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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12-91. The ball at A is kicked with a speed vA = 80 ft/s and at an angle 6A = 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 04 = 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 B y = -0.04x² Probs. 12-91/92
Transcribed Image Text:12-91. The ball at A is kicked with a speed vA = 80 ft/s and at an angle 6A = 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 04 = 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 B y = -0.04x² Probs. 12-91/92
12-97. It is observed that the skier leaves the ramp A at an angle 04 = 25° with the horizontal. If he strikes the ground at B, determine his initial speed v, and the speed at which he strikes the ground. 4 m 100 m B Probs. 12-96/97 12-98. Determine the horizontal velocity v, of a tennis ball at A so that it just clears the net at B. Also, find the distance s where the ball strikes the ground. B 7.5 ft 3 ft - 21 ft Prob. 12-98
Transcribed Image Text:12-97. It is observed that the skier leaves the ramp A at an angle 04 = 25° with the horizontal. If he strikes the ground at B, determine his initial speed v, and the speed at which he strikes the ground. 4 m 100 m B Probs. 12-96/97 12-98. Determine the horizontal velocity v, of a tennis ball at A so that it just clears the net at B. Also, find the distance s where the ball strikes the ground. B 7.5 ft 3 ft - 21 ft Prob. 12-98
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