C
clouddiiee_days
Guest
On December 17, 2003 the first privately sponsored airplane broke the speed barrier. SpaceShipOne fired its rockets at an altitude of 14.6 km while traveling at a velocity of about 188.6 m/s, and 15 seconds later it reached a velocity of about 411.6 m/s. After motor shutdown, it continued in a vertical climb and reached zero speed at an altitude of 20.7 km. Why did SpaceShipOne continue to climb even after motor shutdown?
A It stayed in motion in accordance with Newton's 1st law until the acceleration due to gravity was greater than the upward acceleration.
B The ship broke free from the pull of gravity due to its high altitude, so it continued in accordance with Newton's 1st law.
C The rockets continued to fire for a few seconds after the motor shutdown.
D The ship was pointed upward, so it continued in that direction.
A It stayed in motion in accordance with Newton's 1st law until the acceleration due to gravity was greater than the upward acceleration.
B The ship broke free from the pull of gravity due to its high altitude, so it continued in accordance with Newton's 1st law.
C The rockets continued to fire for a few seconds after the motor shutdown.
D The ship was pointed upward, so it continued in that direction.