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A particle is moving with constant acceleration a. Following graph shows v2 versus x (displacement) plot. The acceleration of the particle is _________ m s-2.
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Important Questions on Kinematics

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The ranges and heights for two projectiles projected with the same initial velocity at angles 42° and 48° with the horizontal are R1, R2 and H1, H2 respectively. Choose the correct option:
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If A and B are two vectors satisfying the relation A·B=|A×B|. Then the value of |A-B| will be:
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A butterfly is flying with a velocity 42 m s-1 in north-east direction. Wind is slowly blowing at 1 m s-1 from north to south. The resultant displacement of the butterfly in 3 seconds is:
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A boy reaches the airport and finds that the escalator is not working. He walks up the stationary escalator in time t1. If he remains stationary on a moving escalator then the escalator takes him up in time t2. The time taken by him to walk up on the moving escalator will be:

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Two vectors P and Q have equal magnitudes. If the magnitude of P+Q is n times the magnitude of P-Q, then angle between P and Q is
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A body rotating with an angular speed of 600 rpm is uniformly accelerated to 1800 rpm in 10 sec. The number of rotations made in the process is
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What will be the projection of vector A=i^+j^+k^ on vector B=i^+j^ ?
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Three particles P, Q and R are moving along the vectors A=i^+j^,  B=j^+k^ and C=-i^+j^, respectively. They strike on a point and start to move in different directions. Now particle P is moving normal to the plane which contains vector A and B. Similarly particle Q is moving normal to the plane which contains vector A and C. The angle between the direction of motion of P and Q is cos-11x. Then the value of x is          .