The chart shows data for four moving objects. Which object has the greatest acceleration? ​

Which explanation describes the forces involved for a person to walk down the sidewalk? a. the person's feet push backward on the sidewalk; the sidewalk pushes backward on the person. b. the person's feet push forward on the sidewalk; the sidewalk does not push on the person. c. the person's feet push backward on the sidewalk; the sidewalk pushes forward on the person. d. the person's feet push forward on the sidewalk; the sidewalk pushes forward on the person.

Which subatomic particle has a negative charge

What is the weight of a feather (mass = 0.0001 kg) that floats through earth's and the moon's atmospheres?