An out-of-control 320 kg boat speeds at 15 m/s towards shore where several small children are...
An out-of-control 320 kg boat speeds at 15 m/s towards shore where several small children are playing. Wonder Woman steps in to stop the boat. If on average she can apply 1500 N of force, how long does it take her to stop the boat?
Homework Answers
given mass m = 320 kg
speed v = 15 m/s
applied force f = 1500 N
from impulse momentum theorem
impulse = change in momentum
impulse = f*t
f*t = m*v
t = m*v/f
t = 320*15/1500
t = 3.2 sec
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