Amelia Earhart was an aviation pioneer. During an attempt to make a circumnavigational flight of the globe in 1937 her plane disappeared over the ocean. If her plane had hit a rock in the ocean they both would sink together. 1) Elastic
2) Inelastic
3) Explosion

Aforce of 100 newtons is used to move an object a distance of 15 meters with a power of 50 watts. find the work dine and the time it takes to do the work

Two manned satellites approaching one another at a relative speed of 0.550 m/s intend to dock. the first has a mass of 2.50 ✕ 103 kg, and the second a mass of 7.50 ✕ 103 kg. assume that the positive direction is directed from the second satellite towards the first satellite. (a) calculate the final velocity after docking, in the frame of reference in which the first satellite was originally at rest.(b) what is the loss of kinetic energy in this inelastic collision? (c) repeat both parts, in the frame of reference in which the second satellite was originally at rest. final velocity(d) loss of kinetic energy = ?

Which radioisotope is used in dating geological formations?