Question

George walks to a friend’s house. He walks 750 meters North, then realizes he walked too far. He turns around and walks 250 meters South. The entire walk takes him 13 seconds. What is his Velocity

Answer 1

Velocity is given by displacement/time. Let's let the north direction be positive and the south direction be negative. George travels 750 meters and then travels -250 meters. His displacement is then 750-250, or 500 meters. Divide that by 13 seconds to get 38.5 m/s.