Vector A has a magnitude of 8unit and make and angle 45 with the x axis vecter B has also same of magnitude of 8unit and directed along tha ne x axis find A )magnitude and direction of A+B
B )magnitude and direction of A-B

Identical marbles are released from the same height on each of the following four frictionless ramps . compare the speed of the marbles at the end of each ramp. explain your reasoning

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?

For the car in the picture ,in which direction is the normal force? -into the screen -down -out of the screen -up