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Standard VII

History

The Formation of Bahamani Kingdom

A stone is pr...

Question

A stone is projected from level ground such that its horizontal and vertical components of initial velocity are $u_{x} = 10 m / s$ and $u_{y} = 20 m / s$ respectively.
Then the angle between velocity vector of stone one second before and one second after it attains maximum height is:

45^{\circ}

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90^{\circ}

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30^{\circ}

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60^{\circ}

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Solution

The correct option is B $90^{\circ}$
Diagram

It can be seen from the figure that the angle between the velocity vectors $1 s e c$ before and $1 s e c$ after it attains maximum height is $90^{\circ}$

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The Formation of Bahamani Kingdom

Standard VII History

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A stone is projected from level ground such that its horizontal and vertical components of initial velocity are ux=10 m/s and uy=20 m/s respectively. Then the angle between velocity vector of stone one second before and one second after it attains maximum height is:

The correct option is B 90∘Diagram It can be seen from the figure that the angle between the velocity vectors 1 sec before and 1 sec after it attains maximum height is 90∘

A stone is projected from level ground such that its horizontal and vertical components of initial velocity are $u_{x} = 10 m / s$ and $u_{y} = 20 m / s$ respectively.
Then the angle between velocity vector of stone one second before and one second after it attains maximum height is:

The correct option is B $90^{\circ}$
Diagram

It can be seen from the figure that the angle between the velocity vectors $1 s e c$ before and $1 s e c$ after it attains maximum height is $90^{\circ}$