What is not a form of erosion

1) mass
2) water
3) wind
4) ice
5) gravity

Aman throws a football straight into the air. as it rises, it slows down. which type of energy is the football gaining?

Astone is thrown with a speed v0 and returns to earth, as the drawing shows. ignore friction and air resistance, and consider the initial and final locations of the stone. which one of the following correctly describes the change δpe in the gravitational potential energy and the change δke in the kinetic energy of the stone as it moves from its initial to its final location? options a.δpe = 0 j and δke = 0 j b.δpe is positive and δke is negative c.δpe = 0 j and δke is positive d.δpe is negative and δke is positive e.δpe = 0 j and δke is negative

Positive ions differ from neutral atoms in that