Arock is dropped from a cliff.

what will eventually happen to the rock's motion?
a. gravity will cause the rock to slow down before it reaches earth.
b. air resistance will cause the rock to accelerate as it falls.
c. the rock will continue falling until earth exerts a contact force on the rock.
d. friction will cause the rock to continue in its state of motion.

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

You can estimate the degree to which a bond between two atoms is ionic or covalent by calculating the

Abus travels 280km south along a straight path with an average velocity of 88km/h to the south. the bus stops for 24 min, then it travels 210 km south with an average velocity of 75 km/h to the south. how long does the total trip last?