A rocket moves through outer space at 11,000 m/s. At this rate, how much time would be required to travel the distance from Earth to the Moon, which is 380,000 km? A rock thrown straight up climbs for 2.50 s, then falls to the ground. Neglecting air resistance, with what velocity did the rock strike the ground? What is the momentum of a 30.0 kg shell fired from a cannon with a velocity of 500 m/s? What forward force must the ground apply to the foot of a 60.0 kg person to result in an acceleration of 1.00 m/s²?