A cannonball is fired with initial speed v0 at an angle 30
Chapter , Problem 74(choose chapter or problem)
A cannonball is fired with initial speed \(v_0\) at an angle \(30^{\circ}\) above the horizontal from a height of 40 m above the ground. The projectile strikes the ground with a speed of \(1.2v_0\). Find \(v_0\). (Ignore any effects due to air resistance.)
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