A cannonball is fired with initial speed v0 at an angle 30\xb0 above the horizontal from a height of 40 m above the ground. The projectile strikes the ground with a speed of 1.2vo. Find v0. (Ignore any effects due to air resistance.)

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A cannonball is fired with initial speed v0 at an angle 30° above the horizontal from a height of 40 m above the ground. The projectile strikes the ground with a speed of 1.2vo. Find v0. (Ignore any effects due to air resistance.)

 

Answer:

The initial speed of the object, the angle at which it is fired at relative to the ground, the height it is fired from, and the acceleration due to gravity.

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