An object initially has kinetic energy of 90 joules and potential energy of 30 joules. A force is applied and the final kinetic energy is 75 joules and final potential energy of 50 joules.
Calculate the initial total mechanical energy
Calculate the final total mechanical energy
Determine the amount of work done on the system
Which of the following statements is true
Total Mechanical Energy increased
Total Mechanical Energy decreased
Total Mechanical Energy was conserved.

It is may 5 and you are somewhere in the northern hemisphere. if you determine that the noon sun is 51 degrees above your southern horizon, what is the latitude of your location

Un jugador de beisbol batea un foul recto en el aire.la pelota deja el bate con una rapidez de 120 km/h. en ausencia de resistencia del aire. ? cual sera la rapidez de la pelota cuando la atrape el catcher

The speed of sound in ice, water, and steam is shown. what best explains the speed of sound in different states of matter? sound travels fastest in ice because energy is easier to transfer when the molecules are close together. sound travels slowest in steam because the sound has to move around the gas molecules that are far apart. sound travels fastest in ice because the temperature of solids is always greater, so the heat transfers the sound energy. sound travels slowest in steam because the pressure is so great the sound cannot travel though the steam particles.