The cannon you are testing weighs 260 kg and shoots a 15 kg projectile. During the...
The cannon you are testing weighs 260 kg and shoots a 15 kg projectile. During the lab tests the cannon is held horizontal in a rigid support so that it cannot move. Under those conditions, you use video analysis of the projectile to determine that the muzzle speed is 300 m/s.
When fired in the field, the cannon is not rigidly attached to the ground, but it is free to move (recoil) when it is fired. There are ropes attached to anchors so that the cannon can only recoil 0.5 m. You must predict the projectile's muzzle speed under field conditions, when it recoils. The cannon is fired horizontally using cannon shells which are identical (same mass, same amount of gunpowder, etc.) to those in the laboratory.
What is the projectile's speed in the field?
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