root3x-1/2xsquare then find out projtile angle and intial velocity of projectile
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Class 11
>>Physics
>>Motion in a Plane
>>Projectile Motion
>>The equation of a projectil...
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The equation of a projectile is y=
3
x−
2
gx
2
the angle of projection is :
Medium
Solution
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Correct option is
B
60
0
the correct answer is B.
the equation of the projectile is
Y=
3
x−
2
gx
2
-------(1)
we know that if a projectile is projected with speed u at angle θ with horizontal.
then, the equation of trajectory of a projectile is:
Y=xtanθ−
2u
2
cos
2
θ
gx
2
--------(2)
comparing both equation(1)&(2)
3
x−
2
gx
2
=tanθx−
2u
2
cos
2
θ
gx
2
tanθ=
3
=tan60
0
So, θ=60
0
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