PROBLEM 3.12 An object is launched at a speed of 20.0 m/s from the top of a tall tower. The height y of the object with respect to the base of the tower as a function of the timet elapsed from launch is y(t) = -4.90t2 + 19.32t + 60, where y is in meters and t is in seconds. Determine: 13. the height H of the tower. 50 m С. 70 m d. 80 m а. b. 60 m 14. the launch angle. 71.35° 73.35° c. 75.35° d. 77.35° а. b. 15. the horizontal distance traveled by the object before it hits the ground. с. 32.28 m d. 34.28 m а. 28.28 m b. 30.28 m

Elements Of Electromagnetics
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ISBN:9780190698614
Author:Sadiku, Matthew N. O.
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PROBLEM 3.12
An object is launched at a speed of 20.0 m/s from the top of a tall tower. The height y
of the object with respect to the base of the tower as a function of the timet elapsed
from launch is y(t) = -4.90t² + 19.32t + 60, where y is in meters and t is in seconds.
Determine:
13. the height H of the tower.
50 m
c. 70 m
d. 80 m
а.
b.
60 m
14. the launch angle.
с. 75.35°
d. 77.35°
а.
71.35°
b.
73.35°
15. the horizontal distance traveled by the object before it hits the ground.
с. 32.28 m
d. 34.28 m
a.
28.28 m
b.
30.28 m
Transcribed Image Text:PROBLEM 3.12 An object is launched at a speed of 20.0 m/s from the top of a tall tower. The height y of the object with respect to the base of the tower as a function of the timet elapsed from launch is y(t) = -4.90t² + 19.32t + 60, where y is in meters and t is in seconds. Determine: 13. the height H of the tower. 50 m c. 70 m d. 80 m а. b. 60 m 14. the launch angle. с. 75.35° d. 77.35° а. 71.35° b. 73.35° 15. the horizontal distance traveled by the object before it hits the ground. с. 32.28 m d. 34.28 m a. 28.28 m b. 30.28 m
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