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प्रश्न
The velocity of a projectile at the initial point A is `(2 hat "i" + 3 hat "j")` m/s. Its velocity (in m/s) at point B is ______.
पर्याय
`-2hat"i"+3hat"j"`
`2hat"i"-3hat"j"`
`2hat"i"+3hat"j"`
`-2hat"i"-3hat"j"`
MCQ
रिकाम्या जागा भरा
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उत्तर
The velocity of a projectile at the initial point A is `(2 hat "i" + 3 hat "j")` m/s. Its velocity (in m/s) at point B is `underlinebb(2hat"i"-3hat"j")`.
Explanation:
At point B the direction of velocity component of the projectile along Y-axis reverses.
Hence, `vec"V"_"B" =2hat"t"-3hat"j"`
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