A Shell Is Fired with a Horizontal Velocity in the Positive

Multiple Choice

A shell is fired with a horizontal velocity in the positive x direction from the top of an 80-m high cliff. The shell strikes the ground 1330 m from the base of the cliff. The drawing is not to scale.

-What is the magnitude of the acceleration of the shell just before it strikes the ground?

A) 4.0 m/s²
B) 9.8 m/s²
C) 82 m/s²
D) 170 m/s²
E) 330 m/s²