a 125 kg wrecking ball on a 15.4 m long cable is pulled back to an angle of 33.5 degrees and released. How much KE does it have at the bottom of its swing? (Unit = J)

mgh = mv2/2; h = l(1 - cos33.5°); v = [2gl(1 - cos33.5°)]1/2 = 8 m/s.

We esed law of conservation of enrtgy.

Explanation:

the arctic is a region of the planet, north of the arctic circle, and includes the arctic ocean, greenland, baffin island, other smaller northern islands, and the far northern parts of europe, russia (siberia), alaska and canada.

increasing transnational kinetic energy. because the transnational kinetic energy formula consists of only two variables, mass and velocity, increasing one of those properties is the only way to increase an object's transnational kinetic energy. increases to mass and velocity, however, do not have the same impact.