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For a particle performing uniform circular motion, choose the correct statement(s) from the following.

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Important Questions on Motion in Two Dimensions

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A body of mass m is thrown upwards at an angle θ with the horizontal, with velocity v. While rising up, the velocity of the mass after a time t will be:

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The velocity of a stone projected 2 s before it reaches the maximum height, makes an angle of 53° with the horizontal. The velocity at highest point will be 
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The figure shows four paths for a kicked football. Ignoring the effects of air on the flight, rank the paths according to the initial horizontal velocity component, keeping the highest first.

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Four bodies P, Q, R and S are projected with equal velocities, having angles of projection 15°, 30°, 45° and 60° with the horizontal respectively. The body having the shortest range is
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The path of a projectile in the absence of air drag is shown in the figure by a dotted line. If the air resistance is not ignored, then, which one of the paths shown in the figure, is appropriate for the projectile?

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A stone projected with a velocity u at an angle θ with the horizontal, reaches a maximum height H1. When it is projected with velocity u at an angle (π2-θ)  with the horizontal, it reaches maximum height H2. If R is the range in both the cases, the correct relation is
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An object is projected with a velocity of 20 m s-1 making an angle of 45° with horizontal. The equation for the trajectory is, h=Ax-Bx2 where h is height, x is horizontal distance and A and B are constants. The ratio A:B is (g=10 m s-2)
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For a given velocity, a projectile has the same range R for two angles of projection. If t1 and t2 are the times of flight in the two cases, then