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a 20 kg projectile is launched from a cannon. a. if the projectile leaves the cannon with a velocity of 54 m/s, what is the work done by the cannon to launch it? 12mv2
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a 20 kg projectile is launched from a cannon. a. if the projectile leaves the cannon with a velocity of 54 m/s, what is the work done by the cannon to launch it? 12mv2

User Derkoe
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1 Answer

17 votes
17 votes

Answer:

KE = 1/2 M v^2 kinetic energy of projectile

KE = 1/2 * 20 * (54 m/s)^2 = work done on projectile

W = 10 * 54^2 = work done on projectile

W = 29,160 J

User Alex Gittemeier
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2.3k points
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