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A particle is projected in air from orig...

A particle is projected in air from origin with speed u and at an angle theta with positive x - axis.At its maximum height its trajectory has radius of curvature R and centre of curvature has coordinate (20m,70/3 m). Choose the CORRECT option(s). (vec g=-10m/s^(2)hat j): -

A

the equation of trajectory is given by y = 3x - 3x^2 /40

B

The maximum height of the projectile is 30m

C

the value of u is √(2000/3)

D

the value of θ is tan-1 (3/√10)

Text Solution

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A B C
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