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The third stage of a rocket is injected by its booster with a velocity u of 13180 km/h at A into an unpowered coasting flight to B. At B its rocket motor is ignited when the trajectory makes an angle of 25° with the horizontal. Operation is effectively above the atmosphere, and the gravitational acceleration during this interval may be taken as 8.97 m/s2, constant in magnitude and direction. Determine the time t to go from A to B. (This quantity is needed in the design of the ignition control system.) Also determine the corresponding increase h in altitude. t= Answers: h = 43" i 153.9 Horiz. i 504.64 S 25 Horiz km

The third stage of a rocket is injected by its booster with a velocity u of 13180 km/h at A into an unpowered coasting flight to B. At B its rocket motor is ignited when the trajectory makes an angle of 25° with the horizontal. Operation is effectively above the atmosphere, and the gravitational acceleration during this interval may be taken as 8.97 m/s2, constant in magnitude and direction. Determine the time t to go from A to B. (This quantity is needed in the design of the ignition control system.) Also determine the corresponding increase h in altitude. t= Answers: h = 43" i 153.9 Horiz. i 504.64 S 25 Horiz km

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* Incorrect The third stage of a rocket is injected by its booster with a velocity u of 13180 km/h at A into an unpowered coasting flight to B. At B its rocket motor is ignited when the trajectory makes an angle of 25° with the horizontal. Operation is effectively above the atmosphere, and the gravitational acceleration during this interval may be taken as 8.97 m/s2, constant in magnitude and direction. Determine the time t to go from A to B. (This quantity is needed in the design of the ignition control system.) Also determine the corresponding increase h in altitude. Answers: t= h= i 153.9 Horiz 504.64 25 Horiz. S km
Transcribed Image Text:* Incorrect The third stage of a rocket is injected by its booster with a velocity u of 13180 km/h at A into an unpowered coasting flight to B. At B its rocket motor is ignited when the trajectory makes an angle of 25° with the horizontal. Operation is effectively above the atmosphere, and the gravitational acceleration during this interval may be taken as 8.97 m/s2, constant in magnitude and direction. Determine the time t to go from A to B. (This quantity is needed in the design of the ignition control system.) Also determine the corresponding increase h in altitude. Answers: t= h= i 153.9 Horiz 504.64 25 Horiz. S km
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