A 25- cents coin is placed on top of an index card which is placed on top of a plastic container. When the index card is flicked with a finger sideward, the coin does not move

with the direction of the force, rather it falls inside the container. What do you think is the

reason why it does not move with the direction of the force?

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