Which is NOT an example of kinetic energy HELP QUICK WILL GIVE BRAINLIEST! options:

A- a skydiver as they decrease speed after opening their parachute.

B- an elevator moving up to the 3rd floor.

C- an arrow after it has hit the target and is at rest.

D- a skateboard rolling down a hill.

Which term best describes the phrase “something that happens”?

What would the difference of spectral lines emitted by hydrogen gas in distant galaxies which is normally found at a wavelength of 21 cm on earth, be observed at 21.1 centimeters?

Your 249 ml cup of coffee is too hot to drink when served at 82 degree celsius. what is the mass of an ice cube taken from a -21 degree celsius freezer, that will cool your coffee to a pleasant 54 degree celsius. specific heat of the water is 4190 j/kg c, specific heat of ice is 2090 j/kg c, heat of fusion of ice is 3.33 x 10^5 j/kg