Can someone help me with these two questions: 1. a body of mass 2.0 kg is acted on by a downward force of gravity and a horizontal force of 40N. Find it's acceleration and velocity as a function of time, assuming it starts from rest. 2. Find the resistance of the air to the motion of a body of 4.0kg in free fall with a gravitational acceleration of 9.2m/s^2. I feel there is not enough information to answer these.