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What are the angles of projection of a projectile projected with velocity `30 ms^(-1)`, so that the horizontal range is 45 m ? Take `g = 10 ms^(-2)`.

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SL ARORA-Motion in a Plane-Excercise
  1. Name two quantities which have maximum values when the maximum height ...

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  5. A stone is thrown at an angle of 45^(@) to the horizontal with kinetic...

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  8. Calculate the average angular velocity of the hour hand of the of a cl...

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  9. What furnishes the centripetal acceleration for the earth to go round ...

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  10. vec(A) is a vector with magnitude A, then the unit vector hat(A) in th...

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  11. Find a unit vector parallel to the vector 3 hat i +7 hat j + 4 hat k.

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  12. Evaluate : hat k . hat k

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  13. Can two non-zero vectors give zero resultant when they multiply with e...

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  14. A vector vec A is exparessed as vec A = A(x) hat I + A(y) hat j where...

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  15. What is the value of vec A xx vec A ?

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  16. What is the angle between vec(A) and the esultant of (vec(A) + vec(B))...

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  17. If |vec A + vec B|= |vec A|+|vec B|, then what is the angle between ve...

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  19. Define (i) unit vector (ii) null vector (iii) cross product of two vec...

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  20. State and prove the commutative property of vector addition.

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