A ball is thrown vertically upward with a speed of +18 m/s. (assume g=10 m/s2
)
a. How high does it rise?
From third equation of motion ,"v^ 2 =u ^2\u22122gh"
"0=u ^2\n \u22122g\\frac{h}{2}"
"h = \\frac{u^2}{g}"
= "\\frac{18^2}{10}"
h= 32.4m
Therefore, ball rises to 32.4m
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