Could someone please check/correct my work for these three related problems? I w

Question

Could someone please check/correct my work for these three related problems? I would very much appreciate it :)

Please refer to this diagram for the three problems listed below

1. Using Conservation of Energy and Kinematics, find an expression (derive) for the range of a ball (launched off of the ramp highlighted in the picture) in terms of H, b, and constants.

2. Use H and b values with uncertainty to calculate the predicted range and its uncertainty in meters. Compare your predicted range to your measured range: are they consistent? Can you determine whether energy has been lost on the ramp?

3. Assume that the energy lost was entirely due to friction and that the total energy of the PVC pipe is 1 meter. Use this length to compute the average force of friction.

Thank you!!

Explanation / Answer

i have checked it. you have done it right.

but the words that predicted and measued are very close is wrong. actually values vary significantly and that difference is due to energy lost due to friction.

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