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A ball is thrown upward from the roof of a building 60m tall. The ball reaches a height...
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Using `uarrv = u+at` for upward travel until it reach 80m above ground. Consider g = 10m/s
`0 = u-10xx2`
`u = 20m/s`
Consider rooftop as datum.
`S = ut+1/at^2`
`S = 20t-5t^2`
Then you know maximum the ball can reach is 20m top from roof and minimum is 60 below roof.
So the range will be `-60<=S<=20`
You know that the ball will travel for 6s. So the domain would be;
Posted by jeew-m on July 4, 2013 at 2:31 AM (Answer #1)
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