A 1210 kg car is driving NE (at 45.0°) at 15.2 m/s when it is struck by a moving 1540 kg car. Afterwards, they stick together and move directly east (at 0°) at 23.3 m/s. What is the y-component of the second car's initial velocity?

The gravitational force between pluto and charon is 3.61 × 1018 n. pluto has a mass of 1.3 × 1022 kg, which is only slightly greater than charon’s mass of 1.6 × 1021 kg. how far apart are pluto and charon? 2.0 × 107 m 2.4 × 1012 m 3.8 × 1014 m 5.8 × 1024 m