How to Solve for J and m in the Impulse-Momentum Theorem?

Thread starter lanky011
Start date Oct 20, 2011
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Theorem

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To solve for J and m in the impulse-momentum theorem, start by using the equation J = mΔv, where Δv is the change in velocity. The problem requires determining the time it takes for an object to accelerate from 4.5 m/s to 14.5 m/s. To express J, consider the net force acting on the object, which can be related to mass and acceleration. By identifying the forces involved and applying Newton's second law, the unknowns can be solved systematically. Understanding these relationships is crucial for applying the impulse-momentum theorem effectively.

Oct 20, 2011

lanky011

(a)Use the impulse-momentum theorem to find how long a falling object takes to increase its speed from 4.5 m/s to 14.5 m/s

(b) J=mΔv

(c) I have 2 unknowns...J and m so how am I suppose to solve this?

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Oct 20, 2011

Doc Al

Mentor

Hint: Write an expression for J. (What force acts?)

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