Which of the following best describes density?
A. amount of mass in a given volume
B. amount of pressure on a substance
C. amount of force pushing on an area
D. amount of heat energy in a given volume of a substance

After the near spacecraft passed mathilde, on several occasions rocket propellant was expelled to adjust the spacecraft's momentum in order to follow a path that would approach the asteroid eros, the final destination for the mission. after getting close to eros, further small adjustments made the momentum just right to give a circular orbit of radius 45 km (45 × 10^3 m) around the asteroid. so much propellant had been used that the final mass of the spacecraft while in circular orbit around eros was only 545 kg. the spacecraft took 1.04 days to make one complete circular orbit around eros. calculate what the mass of eros must be.

Aphysical change is a change in the size, shape,, or stafe of matter true or false

Asher cycles 12 miles in 16 hours. what is his speed?