22. When a model rocket is launched, the propellant burns for a few seconds, accelerating the rocket upward. After burnout, the rocket coasts upward for a while and then begins to fall. A small explosive charge pops out a parachute shortly after the rocket starts down. The parachute slows the rocket to keep it from breaking when it lands. The figure here shows the velocity data from the flight of the model rocket. Use the data to complete parts (a) through (g). 2003 150 100 50 -50 -100- 10 12 Time after launch (sec) (a) How fast was the rocket climbing when the engine stopped? ft/sec (Round to the nearest integer as needed.) (b) For how many seconds did the engine burn? sec (Type an integer or a decimal. Round to one decimal place as needed.) (c) When did the rocket reach its highest point? sec (Type an integer or a decimal. Round to one decimal place as needed.) What was the rocket's velocity when it reached to its highest point? ft/sec (Round to the nearest integer as needed.) (d) When did the parachute pop out? sec (Type an integer or a decimal. Round to one decimal place as needed.) How fast was the rocket falling when the parachute popped out? ft/sec (Round to the nearest integer as needed.) (e) How long did the rocket fall before the parachute opened? sec (Type an integer or a decimal. Round to one decimal place as needed.) (f) When was the rocket's acceleration the greatest? The greatest acceleration happened sec after launch. (Type an integer or a decimal. Round to one decimal place as needed.) (g) When was the acceleration constant? Acceleration was constant between and sec. (Type integers or decimals. Round to one decimal place as needed.) What was the acceleration then? ft/sec2 (Round to the nearest integer as needed.) velocity (ft/sec) 200- 150- 100- 50- -50- -100- 2 4 8 10 12 Time after launch (sec) velocity (ft/sec)
22. When a model rocket is launched, the propellant burns for a few seconds, accelerating the rocket upward. After burnout, the rocket coasts upward for a while and then begins to fall. A small explosive charge pops out a parachute shortly after the rocket starts down. The parachute slows the rocket to keep it from breaking when it lands. The figure here shows the velocity data from the flight of the model rocket. Use the data to complete parts (a) through (g). 2003 150 100 50 -50 -100- 10 12 Time after launch (sec) (a) How fast was the rocket climbing when the engine stopped? ft/sec (Round to the nearest integer as needed.) (b) For how many seconds did the engine burn? sec (Type an integer or a decimal. Round to one decimal place as needed.) (c) When did the rocket reach its highest point? sec (Type an integer or a decimal. Round to one decimal place as needed.) What was the rocket's velocity when it reached to its highest point? ft/sec (Round to the nearest integer as needed.) (d) When did the parachute pop out? sec (Type an integer or a decimal. Round to one decimal place as needed.) How fast was the rocket falling when the parachute popped out? ft/sec (Round to the nearest integer as needed.) (e) How long did the rocket fall before the parachute opened? sec (Type an integer or a decimal. Round to one decimal place as needed.) (f) When was the rocket's acceleration the greatest? The greatest acceleration happened sec after launch. (Type an integer or a decimal. Round to one decimal place as needed.) (g) When was the acceleration constant? Acceleration was constant between and sec. (Type integers or decimals. Round to one decimal place as needed.) What was the acceleration then? ft/sec2 (Round to the nearest integer as needed.) velocity (ft/sec) 200- 150- 100- 50- -50- -100- 2 4 8 10 12 Time after launch (sec) velocity (ft/sec)
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.6: The Inverse Trigonometric Functions
Problem 92E
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