Royce is describing a whitewater rafting trip. as he talks about the raft crashing through rapids, janie's mouth drops, and she finds she is clutching at the arms of her chair. these reactions are part of the

Under the action of a constant force an object accelerates at 7.8 m/s2. what will the acceleration be if (a) the force is halved? (b) the object's mass is halved? (c) the force and the object's mass are both halved? (d) the force is halved and the object's mass is doubled?