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A police van moving on a highway with a ...

A police van moving on a highway with a speed of 30 km `h^(-1)` fires a bullet at a thief's car speeding away in the same direction with a speed of 192 km `h^(-1)`. If the muzzle speed of the buller is 150 m `s^(-1)` ,The speed with which the bullet hit the thief's car is

A

42 m/s

B

105 m/s

C

145 m/s

D

180 m/s

Text Solution

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The correct Answer is:
B
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A police van moving on a highway with a speed of 30 km h^(-1) fires a bullet at a thief’s car speeding away in the same direction with a speed of 192 km h^(-1) . If the muzzle speed of the bullet is 150 ms^(-1) , with what speed does the bullet hit the thief’s car ? (Note: Obtain that speed which is relevant for damaging the thief’s car).

A police van moving on a highway with a speed of 30 km h^(-1) fires a bullett at a thief's car speeding away in the same direction with a speed of 192 km h^(-1) . If the muzzle speed of the bullet is 150 ms^(-1) , with what speed does the bullet hit the thief's car ? (Note : Obtain that speed which is relevant for damaging the thief's car).

Knowledge Check

  • A police van moving on a highway with a speed of 30km h^(-1) fires a bullet at a thief's car speeding away in the same direction with a speed of 192kmh^(-1) . If the muzzle speed of the bullet is 150ms^(-1) , The speed with which the bullet hit the thief's car is

    A
    `42m//s`
    B
    `105m//s`
    C
    `145m//s`
    D
    `180m//s`

  • A police van moving on a highway with a speed of 30km h^(-1) fires a bullet at a thief's car speeding away in the same direction with a speed of 192kmh^(-1) . If the muzzle speed of the bullet is 150ms^(-1) , The speed with which the bullet hit the thief's car is

    A
    `42m//s`
    B
    `105m//s`
    C
    `145m//s`
    D
    `180m//s`

  • A gun mounted on the top of a moving truck is aimed in the backward direction at an angle of 30^(@) to the vertical. If the muzzle velocity of the bullet is 4 ms^(-1) the value of speed of the truck that will make the bullet come of out vertically is

    A
    `1 ms^(-1)`
    B
    `(sqrt3)/(2) "" ms^(-1)`
    C
    `0.5 ms^(-1)`
    D
    `2 ms^(-1)`

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