A ball collides elastically with another ball of the same mass. The collision is oblique and initially one of the ball was at rest. After the collision, the two balls move with same speeds. What will be the angle between the velocity of the balls after the collision?

30^{\circ}

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45^{\circ}

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60^{\circ}

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90^{\circ}

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Solution

The correct option is D $90^{\circ}$
By conservation of momentum both balls deviate $45^{o}$ from the initial velocity direction.
Hence the angle between them will be $90^{o}$

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A ball collides elastically with another ball of the same mass. The collision is oblique and initially one of the ball was at rest. After the collision, the two balls move with same speeds. What will be the angle between the velocity of the balls after the collision?

The correct option is D 90∘By conservation of momentum both balls deviate 45o from the initial velocity direction.Hence the angle between them will be 90o

The correct option is D $90^{\circ}$
By conservation of momentum both balls deviate $45^{o}$ from the initial velocity direction.
Hence the angle between them will be $90^{o}$