A puck move 2.35m/s in a -22.0 direction a hockey stick pushes it for 0.215s changing its velocity to 6.42 m/s in a 50.0 direction what was its velocity

If an athlete runs once around a track, back to the starting line, her average velocity is zero. true or false?

Why does the equilibrium position of the spring change when a mass is added to the spring? will the mass oscillate around the new equilibrium position of the spring or the previous position without a mass attached to the spring? if the equilibrium position of the spring changes by 20 cm (assuming no initial mass) when a mass is added to the spring with constant 4.9 kg/s^2, what is the mass of the object attached to the spring?

Abeam of light shining from water to air strikes the surface at an angle greater than 48 degrees and produces total internal reflection. if the incident beam is at a 50 degree angle what angle is the reflected beam 13 25 50 100