An astronaut has landed on the moon and has taken a rover exploring. He has a mass of 85 kg. He is stops to look around and stands on a platform that is 4.2 m above the Moon's surface. At this height his potential energy is 571.2 J. What is the value for acceleration due to gravity on the Moon?

Gather reliable information to brent make his decision. to gather this information, use newspapers, call insurance companies or look at their web sites, and review consumer magazines and web sites. also, look at the manufacturer web site or for information about gas mileage. list the sources you use and take notes.

Determine the time it takes for a satellite to orbit the earth in a circular "near-earth" orbit. the definition of "near-earth" orbit is one which is at a height above the surface of the earth which is small compared to the radius of the earth, so that you may take the acceleration due to gravity as essentially the same as that on the surface. does your result depend on the mass of the satellite?

What is "decrease in velocity" i need offering 60 !