Question: In preparation for this problem, review Conceptual Example. From the top of a cliff, a person uses a slingshot to fire a pebble straight downward,

In preparation for this problem, review Conceptual Example. From the top of a cliff, a person uses a slingshot to fire a pebble straight downward, which is the negative direction. The initial speed of the pebble is 9.0 m/s.
(a) What is the acceleration (magnitude and direction) of the pebble during the downward motion? Is the pebble decelerating? Explain.
(b) After 0.50 s, how far beneath the cliff top is the pebble?

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