An apple falls from an apple tree growing on a 20° slope. the apple hits the ground with an impact velocity of 16.2 m/s straight downward. what is the component of the apple's impact velocity parallel to the surface of the slope? a.5.5 m/s b.8.7 m/s c.12 m/s d.15 m/s

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