Which describes einstein’s general theory of relativity? check all that apply. a. it replaced the special theory of relativity. b. it applies to accelerating objects. c. it applies to objects in uniform motion. d. it applies to objects in a gravitational field. e. it is an extension of the special theory of relativity. f. it applies to objects in free fall.

How much force must a locomotive exert on a 12840-kg boxcar to make it accelerate forward at 0.490 m/s2?

Which quantities are scalars? choose all that apply a.distance b.speed c. acceleration d.velocity

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.