An astronaut is stationary while floating in space, a short distance from the safety of her spacecraft. The mass of the astronaut including all her gear is 106.2 kg. Her tether to the craft becomes disconnected, and she needs to get back before she runs out of air. She removes her backpack unit, which has a mass of 30.0 kg and, putting herself between the backpack and the craft, pushes the pack with a force of 225 N directly away from the craft. (a) Explain how this action returns the astronaut to the craft. This answer has not been graded yet. (b) What is the magnitude of the acceleration experienced by the backpack while the force is applied? m/s2 (c) What is the magnitude of the acceleration experienced by the astronaut while the force is applied? m/s2A block with mass mi hangs from a rope that is extended over an ideal pulley and attached to a second block with mass my that sits on a ledge slanted at an angle of 200 (see figure below). Suppose the system of blocks is initially motionless and held still, and then it is released. If m, = 6.80 kg and m2 = 3.40 kg, find the magnitude of the acceleration of the blocks, assuming there is no friction between the second block and the ledge. m/s2 m1 20