In which of the following situations is work NOT done? A.
You carry your trophy to the living room.

B.
You throw the ball to your friend.

C.
You put your trophy at the top shelf which is higher than you.

D.
You drag your heavy dog on a walk.

An object moves from position +34m to the position -15m in 15 seconds. what is the total displacement? what is the total velocity?

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?

Atruck driver is attempting to deliver some furniture. first, he travels 8 km east, and then he turns around and travels 3 km west. finally, he turns again and travels 13 km to his destination. what is the drivers distance