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Question

The equation of projectile is y=16x−5x24 Find the horizontal range.

A
R=13.8m
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B
R=8m
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C
R=12.8m
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D
R=9m
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Solution

The correct option is C R=12.8m
The equation of projectile is given by
y=16x54x2
For the horizontal range,, x=R
y=0=16R54R2
16R54R2=0
R(1654R)=0
1654R=0
16=54R
R=16×45
R=12.8m
The correct option is C.

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