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Horizontal and Vertical Components of Projectile Motion

What is the a...

Question

What is the average velocity of the coin?

1 m/sec

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-1m/sec

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-10m/sec

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Solution

The correct option is C
-1m/sec

In this case the coin falls 15m down from the point of drop so its displacement is -15m.

Negative sign as by our convention down is negative

So average velocity = $\frac{- 15}{15} = - 1 m / s e c$ ( i.e. 1 m/s towards downwards)

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