Newton's laws (paraphrased and simplified): 1. Any object at rest stays at rest and every object in motion stays in motion unless acted upon by an outside force. 2. To move a mass you need a force (commonly represented F=ma) 3. every action has an equal and opposite reaction.
So Jack, you were thinking of 3. However, if that island had applied a force to the mongoose, it would fly higher.
Basically, Sir Issac Newton is the deadliest son-of-a-bitch in space.
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