PLSSS HELP A 2-kg cart starting from rest rolls down a hill and at the bottom has a speed of 5 m/s . If the cart were given an initial push, so its initial speed at the top of the hill was 2 m/s , what would be its final velocity at the bottom?

Iflow from a warmer object to a cooler object until both objects are the same temperature what am i?

Suppose two stars are located in region a of the h-r diagram shown in the figure below. star c appears much dimmer than star y as seen from earth. which star can be inferred to be nearer to earth and how do you know?

The safe load, l, of a wooden beam of width w, height h, and length l, supported at both ends, varies directly as the product of the width and the square of the height, and inversely as the length. a wooden beam 4 inches wide, 9 inches high, and 240 inches long can hold a load of 6810 pounds. what load would a beam 3 inches wide, 8 inches high, and 144 inches long, of the same material, support? (round off your answer to the nearest integer.)