1 point A cannon is aimed vertically upward and is used to launch a 44 kg circus
performer to a trapeze above. If the trapeze is 10m above the cannon, how
much energy was used by the cannon?

4,312 J

Explanation:

PE = mgh

= 44(9.8)(10)

= 4,312

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b. lifting dumbbell weight at 20-degree angle from the body after a 45-degree angle