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The times of flight of two projectiles a...

The times of flight of two projectiles are `t_1 and t_2`. If R be the horizontal range of each of them, then

A

`t_1t_2 propR`

B

`t_1t_2 prop R^2`

C

`t_1t_2 prop R^3`

D

`t_1t_2 prop R^(1/2)`

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A
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CHHAYA PUBLICATION-VECTOR-EXERCISE (Multiple Choice Questions)
  1. Given vecA=2hati+3hatj and vecB=hati+hatj . The component of vector ve...

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  2. One of the components of a velocity vector of magnitude 50 m*s^(-1) i...

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  3. The times of flight of two projectiles are t1 and t2. If R be the hor...

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  4. For angles theta and (90^@-theta) of projection, a projectile has the ...

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  5. An aeroplane is flying with a velocity of 216 km/h at an altitude of 1...

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  6. The initial velocity and the acceleration of a particle are vecu=3hati...

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  7. The equations of motion of a projectile are x=36 t and 2y=96t-9.8 t^2....

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  8. Two projectiles, projected with angles (45^@- theta) and (45^@+theta)...

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  9. For a projectile, ("horizontal range")^2 =48xx("maximum height")^2 ...

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  10. Two railway tracks are paraller to west-east direction . Along one tra...

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  11. Angle between the vectors hati +hatj and hati-hatk is

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  12. A vector is multiplied by (-2) .As a result

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  13. In a clockwise system

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  14. A vector vecP=3hati-2hatj+ahatk is perpendicular to the vector vecQ=2h...

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  15. For any two vectors vecA and vecB, if vecA*vecB=|vecAxxvecB| , the mag...

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  16. vecA*vecA=?

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  17. A vector perpendicular to both of (3hati+hatj+2hatk) and (2hati-2hatj...

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  18. A vector normal to acos theta hati+b sin thetahatj is

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  19. A vector vecA of magnitude 2 units is inclined at angles 30^@ and 60^...

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  20. For what values of a and b , the vector (ahati+bhatj) will be a unit ...

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