A missile is fired for maximum range with an initial velocity of 20 m/s. If g = 10 m/s2, the range of the missile is

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50 m

60 m

20 m

40 m

answer is D.

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Detailed Solution

For maximum range of projectile, θ should be 450R = u2sin2θg = u2sin2 ×450g⇒Rmax = u2gGiven, u = 20 ms-1 and g = 10 ms-2Rmax = (20)210 = 40 m

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