Forces: what’s going to happen?
take a look at this box and the forces acting on it.
box with forces acting on it
will the box move, and if so, how will it move? answer the following questions.
1. first, determine the net force acting on the box.
2. if the net force is equal to zero, would the box move? if so, how would it move? explain.
3. if there is a nonzero net force acting on the box, would the box move? if so, how would it move? explain.
4. based on the net force you found for the box, how will this box move?

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