posted by Marley .
A sniper is in training. He discovers the target is at 1000 meters right north to where he ambushes. According to his measurement, it's a moving at a uniform speed of 20 meter/second towards east. What is the position of the target after 2 seconds?
40 meters east of its current position.
The distance is not needed to get that answer. However, that might be where the gun should be aimed, if it takes the bullet 2 seconds to get there (which is likely at that distance).