Two rocks in space collide. One rock has a mass of 2.67 kg and travels at an initial velocity of 1.70X102 m/s toward Jupiter while the other rock has a mass of 5.83 kg. After colliding, the rocks are both moving toward Jupiter with speeds of 185 m/s for the smaller rock and 183 m/s for the larger one. What was the initial velocity of the larger rock?

Apassenger walks toward the rear of a moving train. describe her motion as seen from a reference point on the train. then describe it from a reference point on the ground

Most of the volume of an atom is occupied by the

Beryl states that insulation with the smallest possible thermal conductivity is best to keep a house warm in winter, but worst for keeping a house cool in summer. sapphire insists the reverse is true: low thermal conductivity is good in the summer, but bad in the winter. which one, if either is correct? a. beryl, because low thermal conductivity results in low heat transfer. b. beryl, because low thermal conductivity results in high heat transfer. d. sapphire, because low thermal conductivity results in high heat transfer. e. neither, because low heat transfer is desirable both in summer and in winter.