An airplane travelling clue west experiences a uniform acceleration due to a wind directed south. Eventually, its velocity 0 A) is directed south 0 B) may be directed south 0 C) is directed south-west O D) is directed west 0 E) may be directed west A boat, while crossing a river, points directly north toward the opposite shore for the entire trip. The current is perpendicular to the direction the boat is pointing in. The time it will take to cross will be 0 A) more than if the boat was pointing at an angle somewhat upstream O B) more than if the boat was pointing at an angle somewhat downstream O 0 dependent on the strength of the current 0 D) the same regardless of the current 0 E) impossible to predict without more information In a competition to see who could throw a football the furthest (if wind resistance can be ignored), one should release the ball at an angle of: O A) 450 O B) less than 45 0 C) greater than 45 0 D) 900 0500 If a 30.0 kg crate is pushed across a horizontal surface at a constant velocity, 0 A) the force acting forward is greater than the force acting backward 0 Bl the net force has a value directed forward 0 C) the net force is zero 0 D) the forces acting on the crate are \"unbalanced" O E) there may be no force acting backward