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OpenStudy (anonymous):

A pyrotechnical expert needs to fire a 15kg projectile from a launching device that has a barrel length of 2 meters. The projectile will need to be launched 1km in 5 seconds. Calculate the force needed to launch the projectile

OpenStudy (anonymous):

"The projectile will need to be launched 1km in 5 seconds" can u elaborate this please? :-/

OpenStudy (rajat97):

is the answer 1202.4 N if it is right , please let me know so that i can post te solution

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