Which statement is supported by the motion map? O The train traveled south and then north.
O The train moved at a velocity of 75 mph north.
O The train had a greater velocity when it moved away
from the origin.
O The train stopped for 3 seconds.

Energy is the ability to do work which measures what

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.

What are atoms of the same element with varying number of neutrons