A 50 kg object falls freely for a distance of 10 m near the Earth's surface. Which of the following is the KE gained by the object as it falls?

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.

Often called simply "velocity," this is the velocity of an object at a particular moment in time.

What would be different if joe was moving a book instead of a file cabinet