Initial velocity of a body is 2 -3 - Its constant acceleration is -6 - Find time when its velocity becomes perpendicular to initial velocityA- 1 sB- 2 sC- 3 sD- 4 s

The correct option is A 1 sv⃗.u⃗ = 0 ⇒ 2v_x= 3v_y ∴ v_x = 2 + t v_y = 3 + 5t ∴ t = 1 s ...

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Standard XII

Physics

Uniform and Non Uniform

Initial veloc...

Question

Initial velocity of a body is $2^i - 3^j$ . Its constant acceleration is $^i + 6^j$ . Find time when its velocity becomes perpendicular to initial velocity

1 s

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2 s

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3 s

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4 s

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Solution

The correct option is A 1 s
$\to v . \to u = 0 \Rightarrow 2 v_{x} = 3 v_{y} ∴ v_{x} = 2 + t v_{y} = - 3 + 5 t ∴ t = 1 s$

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Initial velocity of a body is 2^i−3^j. Its constant acceleration is ^i+6^j. Find time when its velocity becomes perpendicular to initial velocity

The correct option is A 1 s→v.→u=0⇒2vx=3vy∴vx=2+tvy=−3+5t∴t=1s

Initial velocity of a body is $2^i - 3^j$ . Its constant acceleration is $^i + 6^j$ . Find time when its velocity becomes perpendicular to initial velocity

The correct option is A 1 s
$\to v . \to u = 0 \Rightarrow 2 v_{x} = 3 v_{y} ∴ v_{x} = 2 + t v_{y} = - 3 + 5 t ∴ t = 1 s$