Which equation represents the total energy of a system?
o a) total energy = kinetic energy
ob) total energy = potential energy + gravity
o c) total energy = potential energy + kinetic energy
od) total energy = kinetic energy + activation energy x gravity

What is relative velocity? in which condition is relative velocity known by adding the velocity of the first body and that of the second body

Boxing gloves are padded to lessen the force of a blow. (a) calculate the force exerted by a boxing glove on an opponent’s face, if the glove and face compress 7.50 cm during a blow in which the 7.00-kg arm and glove are brought to rest from an initial speed of 10.0 m/s. (b) calculate the force exerted by an identical blow in the gory old days when no gloves were used and the knuckles and face would compress only 2.00 cm. (c) discuss the magnitude of the force with glove on. does it seem high enough to cause damage even though it is lower than the force with no glove?

What happens to an isotope during radioactive decay?