Determine which of the following moving objects can be considered a projectile and thereby have its motion described by the equations of projectile motion developed in this chapter. (select all that apply.) a ball is thrown in an arbitrary direction. a boat moving through the water with its engines thrusting the boat forward. a baseball in the hand of a pitcher as he is throwing the ball. a baseball moves through the air as it is headed toward the batter. a skydiver floats to the ground after his parachute has opened.