Legend says that archimedes, in determining whether or not the king’s crown was made of pure gold, measured its volume by the water displacement method. if the crown weighs 600 gm in air, what would its "weight be in water", necessary to prove that it is pure gold?

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?

Galileos view of arrangement of the universe

How long will it take a car traveling of a constant speed of 45m/s to cover the distance of a 2.5km?