Asked by Jay bay
44. ( Calculate the magnitude of the change in momentum in
each of the following examples.
a. A 1,200 kg car accelerates from rest to a speed of
20 m/s.
b. A 75 g pellet moving at 18.0 m/s hits a tree and
lodges in it.
c. A 250 g rubber ball hits the floor at 10.0 m/s and
rebounds at 6.0 m/s.
d. A 60 kg student jogging at 3.0 m/s speeds up to
6.5 m/s.
each of the following examples.
a. A 1,200 kg car accelerates from rest to a speed of
20 m/s.
b. A 75 g pellet moving at 18.0 m/s hits a tree and
lodges in it.
c. A 250 g rubber ball hits the floor at 10.0 m/s and
rebounds at 6.0 m/s.
d. A 60 kg student jogging at 3.0 m/s speeds up to
6.5 m/s.
Answers
Answered by
oobleck
p = mv
so calculate before and after for each event.
(a) before: 1200*0 = 0
after: 1200 * 20 = 24000
change: +24000
so calculate before and after for each event.
(a) before: 1200*0 = 0
after: 1200 * 20 = 24000
change: +24000
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