Question: A boy throws a ball from a cliff at a departure angle of 3 0 degree below the horizontal and an initial velocity of 4

A boy throws a ball from a cliff at a departure angle of 30 degree below the horizontal and an initial velocity of 4 m/s. It lands 100 m from the base of the cliff.
a. How high is the cliff?
b. What is the time of flight?
c. What is the velocity (magnitude and direction) of the ball when it strikes the ground?

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