Problem A person throws a rock straight up into the air. At the moment it leaves
ID: 1636262 • Letter: P
Question
Problem
A person throws a rock straight up into the air. At the moment it leaves the person's hand it is going 96 mph. When the rock reaches its peak, how fast is it going and what is the magnitude and direction of its acceleration? Ignore air drag. Express your answer using appropriate mks units.
Speed =
Acceleration =
Direction =Down
FREE FALLThe state an object is in when gravity is the only force acting on it. Near the surface of a planetary body an object in free fall will have a constant acceleration. This acceleration is referred to as the "free fall acceleration". On Earth, the free fall acceleration is 9.8 m/s2 down.
Explanation / Answer
speed is 0 mph ( at peak it's velocity becomes zero)
Acceleration is 9.8 m/s2 ( when the object is in the free fall the acceleration die to gravity = 9.8 m/s2
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