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# A force of 30000 N j is exerted for 4.00 s, on a 95,000 kg mass?

(a) What is the impulse of the force for this 4.00 s?

(b) What is the mass's change in momentum from this impulse?

(c) What is the mass's change in velocity from this impulse?

(d) Why can't we find the resulting change in kinetic energy of the mass?

### 2 Answers

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- SamanthaLv 58 years agoFavorite Answer
a. Impulse = Ft = 30000(4) = 120000 N-s

b. change in momentum = impulse = 120000 N-s

c. j = m∆v = (95000)∆v => ∆v = 1.26 m/s

d. We do not know the initial velocity.

- 8 years ago
Since this is obviously a question out of a physics textbook, I'm going to have to say look on the textbook to figure out how to solve it yourself instead of looking online for the answer

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