- #1
roughneck84
- 13
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I am having problems with part B of the following question.
A human cannonball with a mass of 70 kg experiences an impulse of 4000 N/s for 0.35 s
a) Calculate the force acting on the human cannonball.
This is my sol'n:
J = 4000 N/s
(delta)t = 0.35 s
J = F(delta)t
4000 N/s = F(0.35 s)
F = (4000 N/s) / (0.35 s)
F = 11429 N
b) How long was the barrel of the cannon? (Assume the force is applied only for a period of time that the cannonball is in the cannon.)
For part B I think I just need clarification on what the question is saying. Is it saying to change the time or the force ?
A human cannonball with a mass of 70 kg experiences an impulse of 4000 N/s for 0.35 s
a) Calculate the force acting on the human cannonball.
This is my sol'n:
J = 4000 N/s
(delta)t = 0.35 s
J = F(delta)t
4000 N/s = F(0.35 s)
F = (4000 N/s) / (0.35 s)
F = 11429 N
b) How long was the barrel of the cannon? (Assume the force is applied only for a period of time that the cannonball is in the cannon.)
For part B I think I just need clarification on what the question is saying. Is it saying to change the time or the force ?