Each croquet ball in a set has a mass of 0.52 kg. the green ball, traveling at 11.3 m/s, strikes the blue ball, which is at rest. assuming that the balls slide on a frictionless surface and all collisions are head-on, find the final speed of the blue ball in each of the following situations: a) the green ball stops moving after it strikes the blue ball. answer in units of m/s.

Jackson is designing a new heater, and he wants to experiment with different thermally conductive materials. which of these materials would be useful in conducting heat?

We put a force of 50n on an object and the acceleration is 100 m/s². what is the mass of the object?

Electric field of the earth. the earth has a net electric charge that causes a field at points near its surface equal to 150 n> c and directed in toward the center of the earth. (a) what magnitude and sign of charge would a 60-kg human have to acquire to overcome his or her weight by the force exerted by the earth’s electric field? (b) what would be the force of repulsion between two people each with the charge calculated in part (a) and separated by a distance of 100 m? is use of the earth’s electric field a feasible means of flight? why or why not?