In the Revolutionary War, the Americans had an advantage in using long rifles, instead of the smooth bore muskets used by the British. The long rifle had a barrel of 48 in. or more, whereas the musket barrel length was on the order of 30 in. (Fig. 6.28). The long rifle had a much greater range than the musket. Explain this greater range in terms of work and impulse. (The rifling grooves in the barrel of a rifle cause the bullet to spin, which gyroscopically improves stability and accuracy.)

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