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A projectile is fired from ground level at an angle of 60° above the horizontal with...

A projectile is fired from ground level at an angle of 60° above the horizontal with an initial speed of 30 m/s. What are the magnitude and direction (relative to horizontal) of its instantaneous velocity at

(a) the moment it is fired,

(b) the moment it reaches its maximum height, and

(c) the moment before it hits the ground?

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