If we throw a ball upward,is it a positive velocity or negative? will the magnitude of the velocity increases or decreases?

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Solution

velocity graduallly decrease and it come to zero

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\begin{matrix} Column I & Column II i.When the ball is above the point & a. always positive of projection, its displacement is ii. When the ball is above the point & b. always negative of projection, its velocity is iii. When the ball is above the point & c. May be positive or may be of projection, its acceleration is & negative iv.When the ball is below the point & d. may be zero of projection, its acceleration is \end{matrix}

Velocity of a body is negative while going upwards or downwards?

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\begin{matrix} Column I & Column II i.When the ball is above the point & a. always positive of projection, its displacement is ii. When the ball is above the point & b. always negative of projection, its velocity is iii. When the ball is above the point & c. May be positive or may be of projection, its acceleration is & negative iv.When the ball is below the point & d. may be zero of projection, its acceleration is \end{matrix}

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