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In a projectile motion let t(OA)=t(1) an...

In a projectile motion let `t_(OA)=t_(1)` and `t_(AB)=t_(2)`.The horizontal displacement from `O` to `A` is `R_(1)` and from `A` to `B` is `R_(2)`.Maximum height is `H` and time of flight is `T`.If air drag is to be considered, then choose the correct alternative(s).

A

`t_(1)` will decrease while `t_(2)` will increase

B

`H` will increase

C

`R_(1)` will decrease while `R_(2)` will increase

D

`T` may increased or decrease

Text Solution

Verified by Experts

The correct Answer is:
A, D
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Knowledge Check

  • In a projectile motion, the height y = sqrt(3)t - 5t^(2) + r^(3) and horizontal distance x = t + 2t^(2) -t^(3) . The angle of projection is given by

    A
    `30^(@)`
    B
    `60^(@)`
    C
    `45^(@)`
    D
    `75^(@)`

  • In a projectile motion let v_(x) and v_(y) are the horizontal and vertical components of velocity at any time t and x and y are displacements along horizontal and vertical from the point of projection at any time t .Then

    A
    `v_(y)-t` graph is a straight line with negative slope and positive intercept
    B
    `x-t`graph is a straight line passing through origin
    C
    `y-t` graph is a straight line passing through origin
    D
    `u_(x)-t` graph is a straight line

  • If T_1 and T_2 are the times of flight for two complementary angles, then the range of projectile R is given by

    A
    `R = 4gT_1T_2`
    B
    `R=2gT_1T_2`
    C
    `R=1/4 gT_1T_2`
    D
    `R = 1/2gT_1T_2`
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