Most metallic elements, such as copper and iron, have high melting points. This
is a useful property because

F. it keeps cars made of metal from
becoming hot on summer days

G. it enables people to use pots and pans
made of metal to cook food

H. it prevents machine parts made of
metal from rusting

J. it makes metals easier to melt so they
can be poured into molds to make
precision tools

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