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A moter car is going due northat a speed...

A moter car is going due northat a speed of 50 km/h. It makes a `90^0` left turn without changing the speed. The change in the velocity of the car is aout

A

50 km/h towards west

B

70 km/h towards south-west

C

70 km/h towards north-west

D

zero

Text Solution

Verified by Experts

The correct Answer is:
B
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Knowledge Check

  • A car going due North at 10sqrt(2) ms^(-1) turns right through an angle of 90^(@) without changing speed. The change in velocity of car is

    A
    `20 ms^(-1)` in South -East direction
    B
    `20sqrt(20) ms^(-1)` in South -East direction
    C
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    D
    `20 ms^(-1)` in North-West direction

  • A car moving with a speed of 25 ms^(-1) takes a U-turn in 5 seconds, without changing its speed. The average acceleration during these 5 seconds is

    A
    `5ms^(-2)`
    B
    `10 ms^(-2)`
    C
    `2.5 ms^(-2)`
    D
    `7.5 ms^(-2)`

  • A car 'A' moves due north at a speed of 40km//hr , while another 'B' moves due east at a speed of 30km//hr . Find the velocity of car B relative to car A (both in magnitude and direction).

    A
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    B
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    C
    `40km//hr`, at an angle `tan^(-1)(3/4)` east of south
    D
    `50km//hr`, at an angle `tan^(-1)(3/4)` east of south

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