As you saw in a recent reading, objects that are freely moving through the air are subject only to the acceleration due to gravity (as long as air resistance is negligible). Near Earth's surface, this is always an acceleration of magnitudein the direction toward the center of the Earth. 

Let's try using that. Suppose I toss a baseball straight up with an initial upward speed of .  

(a) How high does the ball rise? (Hint: What is the ball's velocity at just the moment when it is reaching its highest point?) 

(b) How long does it take to reach that height? 

(c) How long does it take to return to my hand? 

(d) What is the ball's speed as it hits my hand?  

(Think carefully about this before just fiddling with equations; you shouldn't have to do much math. How is the ball's path down similar to its path up?)

Transcribed Image Text:

|g| = 9.8 m/s² |g| = 9.8 m/s²

Answer rating: 100% (QA)

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