gungamer720
21.02.2020 •
Physics
Assume you are a Medieval knight attacking a castle with a cannon. The ball leaves the cannon with a speed of 47.7 m/s. The barrel's angle with respect to the ground is 43.1°, and you make a perfect hit on the tyrant's chamber which is at the same level as the cannon's muzzle. What is the time of flight of the cannon ball?
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Ответ:
The answer to your question is t = 6.64 s
Explanation:
Data
vo = 47.7 m/s
Ф = 43.1°
t = ?
g = 9.81 m/s²
Formula
The ball is describing a projectile motion, let's use the formula of time for this motion.
t = (2vosinФ)/g
-Substitution
t = [2(47.7)(sin43.1)]/9.81
-Simplification
t = [95.4(0.68)]/9.81
t = 65.18/9.81
-Result
t = 6.64 s
Ответ: