A cliff diver pushes off horizontally from a cliff and lands in the ocean 2.00s later. How fast was he going when he entered the water?

Mechanical energy is when the amount of kinetic and potential energies added together remains the same. conserved created lost

Aspring is used to stop a 50-kg package which is moving down a 20º incline. the spring has a constant k = 30 kn/m and is held by cables so that it is initially compressed 50 mm. knowing that the velocity of the package is 2 m/s when it is 8 m from the spring and neglecting friction, determine the maximum additional deformation of the spring in bringing the package to rest.

The first law of thermodynamics states that heat added to a system is neither created nor destroyed but is as it changes into other forms of energy.