(a) Determine the time taken by the projectile to hit point P at ground level.

1 s

(b) Determine the range X of the projectile as measured from the base of the cliff.

2 km

(c) At the instant just before the projectile hits point P, find the horizontal and the vertical components of its velocity. (Take up and to the right as positive directions.) horizontal 3 m/s

vertical 4 m/s

(d) What is the the magnitude of the velocity?

5 m/s

(e) What is the angle made by the velocity vector with the horizontal?

6° (below the horizontal)

(f) Find the maximum height above the cliff top reached by the projectile.

7 m

## This question was asked on Sep 15, 2010.

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