Physics, cannon ball?
A cannon ball is ﬁred horizontally at 200 m/s off a cliff 200 m high. Give the angle, below the horizontal, at which it will enter the sea below.
- ♠ ♣ ♥ ♦Lv 79 years agoFavorite Answer
The horizontal velocity is constant at 200 m/s
The vertical velocity will become
v² = u² + 2as = 0 + 2 * 9.8m/s² * 200m = 3920 m²/s²
v = 62.6 m/s
Θ = arctan(62.6/200) = 17.4º