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A particle has an initial velocity of 3h...

A particle has an initial velocity of `3hat(i) + 4 hat(j)` and an acceleration of `0.4 hat(i) + 0.3 hat(j)`. Its speed after `10s ` is :

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(b)
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A particle has initial velocity of 2hat(i) and has constant acceleration of 3hat(j) . Find its displacement and velocity after 3s. If initially, the particle is located at 3hat(i) +4hat(j) , find its final location.

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Knowledge Check

  • A particle has initial velocity (3 hat i+ 4 hat j) and has acceleration (0.1 hat i+ 0.3 hat j) . Its speed after 10 s is.

    A
    7 unit
    B
    `7 sqrt(2)` unit
    C
    8.5 unit
    D
    10 unit

  • A particle has initial velocity of (3hat(i)+4hat(j)) m//s and a acceleration of (4hat(i)-3hat(j)) m//s^(2) . Its speed after one second will be equal to :-

    A
    `0`
    B
    `10 m//s`
    C
    `5sqrt(2) m//s`
    D
    `25 m//s`

  • A particle has an initial velocity of 4hat(i)+4hat(j) m//s and an acceleration of -0.4 hat(i) m//s^(2) at what time will its speed be 5 m//s?

    A
    `2.5` sec
    B
    `17.5` sec
    C
    `7 sqrt(2)` sec
    D
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