Physics, 05.10.2019 21:30 gracerhodes6972
Consider the image above. vi = the initial velocity and vf = the final velocity. is there acceleration? explain your answer.
a) no. the initial and final velocities are the same.
b) yes. the ball had to slow down in order to change direction.
c) no. acceleration is the change in velocity. the ball's velocity is constant.
d) yes. even though the initial and final velocities are the same, there is a change in direction for the ball.
Answers: 2
Physics, 22.06.2019 07:30
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?
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Physics, 22.06.2019 20:30
Avehicle accelerates from 0 to 30 m/s in 10 seconds on a straight road
Answers: 2
Consider the image above. vi = the initial velocity and vf = the final velocity. is there accelerati...
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