Two spacecraft are 23,500 m apart and moving directly toward each other. Spacecraft#1 has velocity 520 m/s and accelerates at a constant -15.5 m/s2. They want to dock, which means they have to arrive at the same position at the same time with zero velocity. These aliens are watching in anticipation. (a) What should the initial velocity of the spacecraft#2 be? (b) What should be #2 constant acceleration? (Hint start with spacecraft #1)

Are aliens real? justify you’re answer.

Tafari worked one summer on a ship that set weather buoys in the ocean. he watched how one of the buoys moved in the water. describe which parts of the wave would cause the buoy to bob up and down. which wave property determined how fast the buoys bobbed in the water? he observed that when the wind blew harder, the ocean waves were larger, and the buoys moved away from the ship. what effect, if any, did the waves have on how far the buoys moved? explain your answer.

Aregion of space in which a measurable gravitational force is indicated by the force exerted on a test mass is called