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The position vector of car w.r.t. its st...

The position vector of car w.r.t. its starting point is given as `vecr="at" hati+bt^(2)hatj` where a and b are positive constants. find the equation of trajectory :-

A

`a^(2)+bx^(2)=0`

B

`a^(2)y=bx^(2)`

C

`y=(b)/(a^(2))x`

D

`ay^(2)=b^(2)x`

Text Solution

Verified by Experts

The correct Answer is:
B

`x=at,y=bt^(2),t=(x)/(a),`
`thereforey=b((x)/(a))^(2)rArra^(2)y=bx^(2)`
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