A Big Defensive Lineman Picks Up a Fumbled Football and Begins

Multiple Choice

A big defensive lineman picks up a fumbled football and begins rumbling toward the end zone. His mass is 150 kg, and his velocity is 6.0 m/s, west. A brave wide receiver, whose mass is 90 kg, must stop that lineman and he is right in the lineman's path, so it has to be a head-on collision. How fast must the wide receiver be running if he wants to drop the lineman in his tracks and save the day?

A) 88 mph
B) 0.60 m/s
C) 8.3 m/s
D) 10 m/s