Homework Help: principles of physics

Posted by britches on Sunday, February 19, 2012 at 5:03pm.

6. A cannon with a long barrel fires a shell faster because the shell experiences a greater ____________________.
A) change in inertia.
B) impulse.
C) acceleration.
D) None of these.

principles of physics - Damon, Sunday, February 19, 2012 at 6:03pm
force lasts longer
impulse = force * time = change of momentum
longer time --> more impulse

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