M, N and O are three charged objects. M attracts N and N repels O. If O is positive, then: • M is negative and N is negative

• M is negative and N is positive

• M and N are neutral

• M is positive and N is positive

• M is positive and N is negative

Transfer chemicals from one location to another to weather objects. a-water b-physical weathering c-chemical weathering

If jerome is swinging on a rope and transferring energy from gravitational potential energy to kinetic energy, is being done.

Which body is in equilibrium? (1) a satellite orbiting earth in a circular orbit (2) a ball falling freely toward the surface of earth (3) a car moving with a constant speed along a straight, level road (4) a projectile at the highest point in its trajectory