Answer:
( ≧Д≦)( ≧Д≦)( ≧Д≦)( ≧Д≦)( ≧Д≦)( ≧Д≦)( ≧Д≦)( ≧Д≦)( ≧Д≦)( ≧Д≦)( ≧Д≦)( ≧Д≦)( ≧Д≦)(´;︵;`)
Explanation:
shoot the ball from his hand an initial height 2 m winh velocity of 10 meters pwler second ,the height ofthe ball can be modeled by the ģuadratic eģuation want tje answer -4.9t2+10t2+2 after t second
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