A soldier has a huge contraption that notches a large 4 kg arrow (it looks more

Question

A soldier has a huge contraption that notches a large 4 kg arrow (it looks more like a lance) in a massive bow and uses a winch system to draw the arrow back to set the bow. The soldier does 118 J of work in the process setting the bow/arrow combination and then releases the arrow. What is the speed of the arrow?
A soldier has a huge contraption that notches a large 4 kg arrow (it looks more like a lance) in a massive bow and uses a winch system to draw the arrow back to set the bow. The soldier does 118 J of work in the process setting the bow/arrow combination and then releases the arrow. What is the speed of the arrow?
A soldier has a huge contraption that notches a large 4 kg arrow (it looks more like a lance) in a massive bow and uses a winch system to draw the arrow back to set the bow. The soldier does 118 J of work in the process setting the bow/arrow combination and then releases the arrow. What is the speed of the arrow? A soldier has a huge contraption that notches a large 4 kg arrow (it looks more like a lance) in a massive bow and uses a winch system to draw the arrow back to set the bow. The soldier does 118 J of work in the process setting the bow/arrow combination and then releases the arrow. What is the speed of the arrow?

Explanation / Answer

work done ,W= 0.5*m*v^2

v = sqrt(2*W/m) = 7.68 m/s

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