44th question pls asap

1.	44th question pls asap
Answer» F Projectile = R = uSin/ ( 20) / gMax. Range is at ∅⇒45°R = U/g ⇒ u = Rg ⇒ 400gWhen a particle PUSHED up through a inclined plane,a = -gSin∅a = -gSin30° = -g/2Now,by the Equation of Motionv² - u² ⇒ 2as- (400g)² = 2 X g/2 X 8S = 400g

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