A cannon can launch an artillery shell with an initial launch speed of 320 m/s. (Solve the following problems using energy considerations, and ignoring air resistance) If the shell is launched vertically upward, how high will the shell go above its launch position? When a 100kg shell is at half of its maximum height, what is its kinetic energy? If the shell is launched with the same speed, but at an angle of 65˚ with respect to the horizontal, how high will it go above its launch position? Keep in mind that the kinetic energy will not be zero at the high point of the trajectory.

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Q: True or False: "An object at rest has potential energy

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A:

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A:

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Q: that

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A:

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A: Free body diagram: