1. A bird is gliding at an angle of 15° to the horizontal at a constant velocity. If the mass of the bird is 0.45 kg, calculate the lift and drag forces acting on the bird. 2.A bird is gliding with a constant velocity. Its forward speed is 5 m/s and its sinking speed is 0.88 m/s. If the lift force is 29.43 N, calculate the drag force acting on the bird. So. I have two questions I don't really know what formulas to use or anything as i havn't been in a physics type class in a while, if someone could help answer these and explain them to me a bit or just explain them it'd be great :). I don't know what level this would be at in terms of introductory (which i'm assuming it is because the class i'm getting this in is not a physics class) or advanced considering this is a senior class.