- An astronaut at rest in space with mass 84 kg is hit by a 0.035 kg piece of debris moving at 875 m/s. The debris bounces off in the opposite direction at 5 m/s. What is the velocity of the astronaut after being hit?

Afeather of mass 0.001 kg falls from a height of 2 m. under realistic conditions, it experiences air resistance. based on what you know about friction, what can you say about the kinetic energy of the feather as it reaches the ground? acceleration due to gravity is g = 9.8 m/s2. a. ke < 0.0196 j b. ke = 00196 j c. je = 0 j d. ke > 0.0196 j

The ozone hole appears in antarctica during

Name two kinds of practical electric pumps.