A hockey puck sliding on a frictionless surface strikes a box at rest. After the collision, the two objects stick together and move at some final speed.
Which of the statements describes the change in momentum and energy of the puck during the collision?
a) The puck loses some, but not all, of its original momentum and mechanical energy.
b) One cannot determine if the momentum or energy of the puck is conserved without knowing the final velocities and masses of the two objects.
c) The puck loses some momentum in the collision but conserves its mechanical energy.
d) The puck conserves its original momentum but loses all of its mechanical energy.
e) The puck conserves its original momentum and mechanical energy.
f) The puck conserves its original momentum but loses some, but not all, of its mechanical energy.
Answers: 2
Physics, 21.06.2019 18:30, iliketurtures
Three archers each fire four arrows at a target. joe’s four arrows hit at points 10 cm above, 10 cm below, 10 cm to the left, and 10 cm to the right of the center of the target. all four of moe’s arrows hit within 1 cm of a point 20 cm from the center, and flo’s four arrows hit within 1 cm of the center. the contest judge says that one of the archers is precise but not accurate, another archer is accurate but not precise, and the third archer is both accurate and precise. which description applies to which archer? explain
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Physics, 22.06.2019 23:30, dragador7601
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