- #1
jgerco
- 1
- 0
the question is how far away was a cannonball fired?
we know that the
-cannonball ricocheted along the ground an unknown amount of times before hitting the persons kneecap and shattering it.
-a three pound cannon ball has a mass of 1.36kg
-the maximum range of the cannon is 1125m
-the maximum elevation of the cannon is 30 degrees
-the cannon was on flat ground
-acceleration due to gravity is 9.8 ms-2
-no air resistance
-a kneecap is 1 cm thick
-the force needed to break a kneecap is 12000 N
-the cannon ball was about to hit the ground
-the cannon muzzle was at the same height as his knee
-the angle of incidence and reflection are the same 30 degrees for evry time it hits the ground
-each time the ball hits the ground its kinetic energy is reduced by 75%
any help to this question would be much appreciated and if you think you have the answers to my question could you please e-mail me at mmm_freak@yahoo.com.au thank you
we know that the
-cannonball ricocheted along the ground an unknown amount of times before hitting the persons kneecap and shattering it.
-a three pound cannon ball has a mass of 1.36kg
-the maximum range of the cannon is 1125m
-the maximum elevation of the cannon is 30 degrees
-the cannon was on flat ground
-acceleration due to gravity is 9.8 ms-2
-no air resistance
-a kneecap is 1 cm thick
-the force needed to break a kneecap is 12000 N
-the cannon ball was about to hit the ground
-the cannon muzzle was at the same height as his knee
-the angle of incidence and reflection are the same 30 degrees for evry time it hits the ground
-each time the ball hits the ground its kinetic energy is reduced by 75%
any help to this question would be much appreciated and if you think you have the answers to my question could you please e-mail me at mmm_freak@yahoo.com.au thank you