A particle is following the curved path with constant speed. What is the tangential acceleration of the particle?

Zero.
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What is the name given to the path followed by a projectile?

Trajectory.
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What is the sum of the squares of the direction cosines of any vector?


One.
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A particle moves in a plane with constant acceleration in direction different from initial velocity. What type of path will be followed by the particle?

Parabola.
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What is the value of straight A with rightwards arrow on top. straight B with rightwards arrow on top cross times straight A with rightwards arrow on top?


Zero.

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