A potato cannon that uses aerosol gas combustion to propel the potato is used to launch a potato with an initial speed v from a launching stand at an angle, as shown above. The potato exits the end of the potato cannon at a height h above the ground. The potato lands a horizontal distance D from the end of the potato cannon. Air resistance and all frictional forces inside the cannon and in the air are negligible.
(a) Below left is the free body diagram of the forces exerted on the potato while it is being launched. Below on the right the potato is the black dot. Draw the free body diagram for the potato after the potato has left the cannon and is mid-air.Air resistance is negligible
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