Phy 121
Your 'cq_1_08.1' report has been received. Scroll down through the document to see any comments I might have inserted, and my final comment at the end.
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A ball is tossed upward with an initial velocity of 25 meters / second. Assume that the acceleration of gravity is 10 m/s^2 downward.
• What will be the velocity of the ball after one second?
answer/question/discussion: ->->->->->->->->->->->-> : I think that the velocity after the first second will be 15m/s because each second the ball goes up, the velocity is decreasing 10m/s.
• What will be its velocity at the end of two seconds?
answer/question/discussion: ->->->->->->->->->->->-> : The velocity after two seconds will be 5m/s due to the same reasoning as before.
• During the first two seconds, what therefore is its average velocity?
answer/question/discussion: ->->->->->->->->->->->-> : The velocity at t=0 is 25m/s, at t=1 is 15m/s, and at t=2 is 5m/s. The initial velocity is 25m/s and the final velocity is 5m/s, thus the average velocity is going to be 15m/s.
• How far does it therefore rise in the first two seconds?
answer/question/discussion: ->->->->->->->->->->->-> : Since the average velocity is15m/s, the distance traveled in two seconds will be 3 0meters.
• What will be its velocity at the end of a additional second, and at the end of one more additional second?
answer/question/discussion: ->->->->->->->->->->->-> :
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25 minutes
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&#Good responses. Let me know if you have questions. &#