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## Homework Statement

A 2.5kg cannonball is fired from the top of a 75m cliff at an angle of 30 degrees above the horizontal with an initial speed of 120m/s.

## Homework Equations

What is the minimum speed of the cannonball?

When does the cannonball hit the ground?

What is it's speed just before it hits the ground?

## The Attempt at a Solution

I don't really have an attempt as I am not sure where to start but I would prefer guidance on how to complete the problem instead of just receiving answers.