Rita is riding a 7.0 kilogram bike at a velocity of 15 meters/second. rita’s mass is 42 kilograms. what is her momentum? a. 1.0 × 102 kilogram meters/second b. 5.2 × 102 kilogram meters/second c. 6.3 × 102 kilogram meters/second d. 7.4 × 102 kilogram meters/second e. 8.5 × 102 kilogram meters/second