What is the mass of a man running at 3.82 m/s if he has a kinetic energy of 879.9 J?

Is there a net force acting on the planet Earth? Explain.

A white dwarf can dramatically increase in brightness only if it (a) has another star nearby; (b) can avoid nuclear fusion in its core; (c) is spinning very rapidly; (d) is descended from a very massive star.

During which moon phases can a heap tide occur?

What is the force that acts in an upward direction, against the force of gravity, so it makes an object feel lighter?

What three changes in motion show that an object is accelerating?

1: Explain how insurance transfers risk to a third party.

How do you find period when you have frequency

Which electromagnetic waves have a higher frequency than visible light

Calculate the speed for a car that went a distance of 125 miles in 2 hours time

A small 25 kilogram canoe is floating downriver at a speed of 4 m/s. What is the canoe's kinetic energy?