LE 2
How much physical activity should an adult have each week?
A 60 minutes per day, 7 days a week
В. 30 minutes per day, 7 days a week
C 60 minutes per day, 5 days a week
D 30 minutes per day, 5 days a week
Please select the best answer from the choices provided.
A
В

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 two particles are found in the center of an atom

The man of mass m1 and the woman of mass m2 are standing on opposite ends of the platform of mass m0 which moves with negligible friction and is initially at rest with s = 0. the man and woman begin to approach each other. derive an expression for the displacement s of the platform when the two meet in terms of the displacement x1 of the man relative to the platform.