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A projectile is fired at an upward angle of 45 from the top of a 241 m cliff with a speed of 170 m/s. What will be its speed when it strikes the

A projectile is fired at an upward angle of 45° from the top of a 241 m cliff with a speed of 170 m/s. What will be its speed when it strikes the ground below? (Use conservation of energy.)

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