Speed is the speed that object is moving on while velocity is the direction and movement speed you can make it but velocity no
Retrograde. Planets seem to move forward and then backward sometimes. This is really because we pass them as we move in our orbit but astronomers wanted to try to describe the solar system with earth at the center so elaborate models were employed.
Answer:
The work done on an object arises from a force applied over a distance ... the frictional force on the tires is equal to the kinetic energy of the car, KE=1/2 ... As an example, consider an apple of mass m which is initially a height h above the ground. ... held motionless so that the initial mechanical energy is Etop = PEtop = mgh.
Explanation:
I believe they lose and gain they slowly even out use a periodic table for help
Reservoir i think. i’m not sure