A projectile is shot from the edge of a cliff 115 m above ground level with an i

Question

A projectile is shot from the edge of a cliff 115 m above ground level with an initial speed of v0 = 70m/s  at an angle of 35.0? with the horizontal

1) Determine the time taken by the projectile to hit point P at ground level

2) Determine the distance X of point P from the base of the vertical cliff

3)At the instant just before the projectile hits point P, find the horizontal and the vertical components of its velocity.

4)At the instant just before the projectile hits point P, find the magnitude of the velocity.

5)At the instant just before the projectile hits point P, find the angle made by the velocity vector with the horizontal.

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

Explanation / Answer

a) Let t = time taken by the projectile to hit point P at ground level in
second
dy = Viy(t) + (1/2)(g)(t^2)
dy = (Vosin?)(t) + (1/2)(g)(t^2)
- 115 m = (70 m/s x sin 35.0

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