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A ball is spun with angular acceleration α = 6t 2 – 2t, where t is in second and α is in rads –2 . At t = 0, the ball has angular velocity of 10 rads –1 and angular position of 4 rad. The most appropriate expression for the angular position of the ball is :

1. t 10 t t 4 3 2 4 + −
2. 4 t 10 3 t 2 t 3 4 + + −
3. 12 t 10 6 t 3 t 2 3 4 + + −
4. 4 t 5 2 t t 2 3 4 + + − CAREER POINT CAREER POINT Ltd., CP Tower, IPIA, Road No.1, Kota (Raj.), Ph: 080-47250011 www.careerpoint.ac.in 2 JEE Main Online Paper

Correct answer: 4 t 10 3 t 2 t 3 4 + + −

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