A1500kg space probe is moving at constant velocity of 4200m/sec. in a course change maneuver the rocket engines fire for 5 minutes increasing the probe's velocity to 5000m/sec. what is the probe's change in kinetic energy? a. 3.68x10^6 j. b. 5.52x10^9 j c. 1.1x10^10 j d. not enough info.

Atank has a shape of a cone with a radius at the top of 2 m and a height of 5 m. the tank also has a 1 m spout at the top of the tank. the tank is filled with water up to a height of 2 m. find the work needed to pump all the water out the top of the spout. (use 9.8 m/s2 for g and the fact that the density of water is 1000 kg/m3.)