A 0.5 kg ball is rolling down a hill going at 4 m/s. How much force is acting on the ball if it rolled for 5 m?

The discovery that the universe appears to be expanding led to a widely accepted theory called a.) the big bang theory b.) the doppler effect c.) hubble’s law d.) solar nebular theory e.) the seyfert theory

The act of moving from one place to another. a. locomotor b. aerobic c. stationary d. static

The difference between a red shift and a blue shift has to do with wavelength frequency. t or f