two carts are at rest with a spring between them the spring is released find the mass of the cart on the right hand side

The amount of potential energy possessed by an elevated object is equal to

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

What is the momentum of 70 kg runner traveling at 10 m/s?