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If two projectiles are projected from ground with speeds $u_{1}$ and $u_{2}$ at angles $α_{1}$ , $α_{2}$ with horizontal then relative acceleration between them is (in m/ $s e c^{2}$ )

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Correct option is C

a1x=0 = acceleration along x-axis; a1y=-g =acceleration along y-axisa2x=0 =acceleration along x-axis; a2y=-g =acceleration along y-axis∴a12→=a1→−a2→=a1xi^+a1yj^−a2xi^+a2yj^a12→=(0i^-gj^)−(0i^-gj^)=0

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If two projectiles are projected from ground with speeds u1 and u2 at angles α1, α2 with horizontal then relative acceleration between them is (in m/sec2)

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If two projectiles are projected from ground with speeds $u_{1}$ and $u_{2}$ at angles $α_{1}$ , $α_{2}$ with horizontal then relative acceleration between them is (in m/ $s e c^{2}$ )