answer: a whip
momentum = (mass) x (speed) .
so 907,175 kg-m/s = (36,287 kg) x (speed)
divide each side by (36,287 kg):
speed = (907,175 kg-m/s) / (36,287 kg)
speed = 25 m/s
that's the truck's speed. we can't do anything that involves the truck's velocity, because we don't know what direction the truck is moving.