Someone in a car going past you at the speed of 49 m/s drops a small rock from a height of 1.9 m how far from the point of the drop will the rock hit the ground? the acceleration due to gravity is 9.8 m/s^2 answer in units of m

The astronauts on the space shuttle flights experienced an acceleration of 29 m/s2 (about 3 "g's") during lift-off. what upward force must the astronaut's seat apply to the astronaut in order to cause this acceleration? assume the astronaut's mass is 70 kg, and compute this force when the acceleration is near the earth's surface so their weight equals latex: mg m g .