You pushed on a crate with a force of 10 N, and it moved 2.5 m/s. How much power did you produce as you pushed? 25 W
O 4W
0 245 W
0 39.2 W

An astronaut on the moon throws a baseball upward. the asatronaut is 6ft, 6in. tall, and the initial velocity of the ball is 30ft per second. the heigh s of the ball in feet is given by the equation s = -2.7^2 + 30t + 6.5, where t is the number of seconds after the ball was thrown. after how many seconds is the ball 16ft above the moon's surface?