A rock was thrown horizontally from 100.0 m high cliff . It strikes the ground 90.0 from the base if the cliff. At what speed was it thrown. And a car weighing 12000 N parked on a 36 degree slope. Find the force tending to cause the car to roll down the hill. Find the acceleration of the car rolling down the hill

Scientist have use computer models to create a series of maps that show how susceptible coastal cities in island countries are to the sea rising at different levels.the map shows that a 1 meter rise would swap cities all along the us eastern seaboard. a 6-meter sea level rise with sub merge a large part of florida. thermal expansion has already raise the oceans 10 to 20 centimeters the most likely cause,directly and indirectly, for such a rise in sea level is