A plane moves with a northerly heading. There is a wind to the east. To an observer on the ground what direction will the plane appear to be moving (just approximate like south and west, North and west etc...) An object is falling due to gravity from the roof of a building. On the 4th floor you observe it takes is to pass the 4th floor window. On the 3rd floor will it take more than, less, than or equal to ls to pass by a window of the same size. Why? You are solving a projectile problem where the projectile is fired from ground level, and you want to find the time it takes to get to a certain height. This leads to a quadratic equation for time, and two solutions. Why are there two solutions for the time to get to a particular height? You are driving a cart on the moon {no air resistance, some weak gravity) and you are travelling at a speed of 1 m/s. You hold out your hand and drop an object. Describe the motion of the object (both horizontal and vertical directions) relative to the cart