An arrow is shot from a height of 1.4 m toward a cliff of height H. It is shot with a velocity of 31 m/s at an angle of 60 above the horizontal. It lands on the top edge of the cliff 3.8 s later.

A) What is the height of the cliff (in m) ?

b) What is the maximum height (in m) reached by the arrow along its trajectory?

C) What is the arrows impact speed (in m/s) just before hitting the cliff?