A ball moving with velocity $$9$$ $$ms-1$$ collides with another similar stationary ball. If after the collision, both the balls move in directions making an angle of $$30$$° with the initial direction, then their speeds after collision will be

Question

A ball moving with velocity $$9$$ $$ms-1$$ collides with another similar stationary ball. If after the collision, both the balls move in directions making an angle of $$30$$° with the initial direction, then their speeds after collision will be

Infinity Learn · Accepted Answer

The given condition as shown in the figure below.After collision, $$mv1$$ $$sin$$θ $$=$$ $$mv2$$ $$sin$$θ ⇒$$v1=v2=v$$∴                   $$2$$ mv $$cos$$ θ$$=$$ m×$$9$$⇒                  $$2v$$ $$cos$$ $$30$$°$$=9$$⇒                               $$v=93=33=5.2$$ $$ms-1$$

A ball moving with velocity $9 {ms}^{- 1}$ collides with another similar stationary ball. If after the collision, both the balls move in directions making an angle of 30° with the initial direction, then their speeds after collision will be

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A ball moving with velocity 9 ms-1 collides with another similar stationary ball. If after the collision, both the balls move in directions making an angle of 30° with the initial direction, then their speeds after collision will be

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A ball moving with velocity $9 {ms}^{- 1}$ collides with another similar stationary ball. If after the collision, both the balls move in directions making an angle of 30° with the initial direction, then their speeds after collision will be