oblem 2: A model rocket is shot upward from a height of 10 feet. Its height H, in feet, above the ground after t seconds is given by H(t) 10+159t- 16t. a. Determine the time at which the rocket strikes the ground. b. Sketch the graph of the height function, labels all axes, and include units. dH c. Sketch the graph of the upward velocity of the rocket, labels all axes, and include units. dt