When a model rocket is launched, the fuel burns for a few seconds, accelerating the rocket upward. After burnout, the rocket continues upward, but then begins to fall. A parachute opens while the rocket is descending Velocity of a Rocket (1 / sec) 200 150 100 50 -50 -100 Time (sec) (a) What is the velocity of the rocket at 11 seconds? feet per second (b) When did the parachute open? -Select- (c) When was the rocket at its highest point? -Select- (d) How far did the rocket travel between 4 and 6 seconds? feet