A 0.042 kg arrow with a velocity of 11.17 m/s to the west strikes and pierces the center of a 5.5 kg target. What is the final velocity of the combined mass?

Natural forces that can alter ecosystems include seasons and climate changes. t or f

Does work output exceed work input when a machine is used? a) yes, it does, as machines create energy. b) it depends on the type of machine used. c) no, it doesn’t, as machines are inefficient. d) no, it doesn’t, as machines cannot create energy.

If a substance is in the gas phase, which of qualities of the gas will stay constant? a: volume b: mass c: shape d: position of particles