An object of mass 1 kg is traveling with a constant speed of 10 m/s in the positive x-direction.
Consider case 1 in which the object above comes to a stop in 1 second.
Consider case 2 in which the same object comes to a stop in 10 seconds instead of 1 second.

Which case had the bigger change in momentum?

a. case 1

b. case 2

c. both cases have the same change in momentum

d. it cannot be determined

Heat from the sun reaches earth to a. radiation b. convection c. conduction

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?

Which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?