Olaf is standing on a sheet of ice that covers the football stadium parking lot in buffalo, new york; there is negligible friction between his feet and the ice. a friend throws olaf a ball of mass 0.400 kg that is traveling horizontally at 10.8 m/s . olaf's mass is 65.9 kg . if the ball hits olaf and bounces off his chest horizontally at 7.50 m/s in the opposite direction, what is his speed vf after the collision?

Does the asteroid belt revolve around the sun?

Which statements describe how a machine can make work easier? check all that apply. it can put out more force than the input force by decreasing the distance through which force is applied. it can increase the amount of work performed if the output force is in the same direction as the input force. it can apply a force to an object in a different direction than the force applied to the machine. it can increase the distance through which a force acts by exerting less force than was used on it. it can exert a greater force through a greater distance than the force used on the machine.

10 pts. if an electromagnetic wave has a frequency of 8 ⋅ 10^14 h z , what is its wavelength? use λ=v/f. the speed of light is 3 ⋅ 10^8 m/s.