Two football players move in a straight line directly toward one another. Their equations of motion are as follows: X 1  = 0.1 m + (- 3.1 m/s) t

X 2  = - 6.3 m + ( 2.8 m/s) t

At what time do the players collide?

Which of the following statements about the migration of workers to other countries is false?

The difference(s) between the grand canyon and valles marineris is/are: (a) the grand canyon was formed by water, but valles marineris was not. (a) valles marineris is much longer than the grand canyon. (c) valles marineris is much wider than the grand canyon. (d) valles marineris has large volcanoes near it. all of the above

Which occurs when air is compressed? air molecules move slower. air temperature rises and air molecules move faster. air temperature decreases. air temperature decreases and air molecules move faster.