At what speed does a 400 g water polo ball move if it has the same kinetic energy as a 60 g tennis ball when flying at a speed of 25 m / s?​ explain please

What is the final velocity of the initial velocity of 25 and -50?

Which statement is true? a. kepler's laws apply only to the motion of earth. b. kepler's laws can be used to predict eclipses. c. kepler's laws are true for a central force that is directly proportional to distance. d. kepler's laws can be deduced from newton's laws of motion and gravity.

You have a pick-up truck that weighed 4,000 pounds when it was new. you are modifying it to increase its ground clearance. when you are finished