A comet moving 564 km per minute traveling in an east-to-west direction passed near Earth in 1995. The comet was 15,780 km above Earth’s surface and visible with a telescope. Which statement best describes the comet’s motion? A. Its speed was 564 km/min

B. Its acceleration was 564 km/s2

C. Its velocity is 564 km/min eastward.

D. Its acceleration was 9.4 km/s

Plss anybody know how to do this? ? i need the answers from a through d

Agas contained within a piston-cylinder assembly undergoes three processes in series: process 12: compression with pv= constant from 1 bar and 1 liter to 4 bar. process 23: constant pressure expansion to 1 liter. process 31: constant volume calculate the pressure and volume at each state, and sketch the processes on a p-vdiagram labeled with pressure and volume values at each numbered stat

(a) assume the equation x = at^3 + bt describes the motion of a particular object, with x having the dimension of length and t having the dimension of time. determine the dimensions of the constants a and b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.) (b) determine the dimensions of the derivative dx/dt = 3at^2 + b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.)