Answer:
M = 0.115 kg
Explanation:
given,
mass of arrow = 120 g = 0.12 Kg
speed of arrow before it strike apple = 29.7 m/s
distance traveled by the arrow stick combination = 9.30 m
height of the son = 1.85 m
weight of the apple = ?
now,
time of flight of arrow and apple combination
using equation of motion
![h = u t + \dfrac{1}{2}gt^2](https://tex.z-dn.net/?f=h%20%3D%20u%20t%20%2B%20%5Cdfrac%7B1%7D%7B2%7Dgt%5E2)
![h = \dfrac{1}{2}gt^2](https://tex.z-dn.net/?f=h%20%3D%20%5Cdfrac%7B1%7D%7B2%7Dgt%5E2)
![t = \sqrt{\dfrac{2h}{g}}](https://tex.z-dn.net/?f=t%20%3D%20%5Csqrt%7B%5Cdfrac%7B2h%7D%7Bg%7D%7D)
![t = \sqrt{\dfrac{2\times 1.85}{9.8}}](https://tex.z-dn.net/?f=t%20%3D%20%5Csqrt%7B%5Cdfrac%7B2%5Ctimes%201.85%7D%7B9.8%7D%7D)
t = 0.614 s
![speed = \dfrac{distance}{time}](https://tex.z-dn.net/?f=speed%20%3D%20%5Cdfrac%7Bdistance%7D%7Btime%7D)
![s = \dfrac{9.30}{0.614}](https://tex.z-dn.net/?f=s%20%3D%20%5Cdfrac%7B9.30%7D%7B0.614%7D)
s = 15.15 m/s
using conservation of momentum
m v = (M+ m) s
0.12 x 29.7 = (M+ 0.12) x 15.15
M+ 0.12 = 0.235
M = 0.115 kg
mass of apple is equal to 0.115 Kg
Say in your conclusion that your Hypothesis was incorrect
Answer:
A. True
Explanation:
This is because these aircraft experiences different types of vibrations which include buffet vibrations and aerodynamic flutter. Buffet vibrations are vibrations caused by an interruption of airflow. Buffet vibrations are usually felt when the aerodynamic brakes are applied.
Aeroelastic flutter is the most dangerous type of vibration. This occurs when energy added to the wings due to airflow is greater than that lost due to damping. Aeroelastic flutter can cause aircraft to fail when the vibrations are large enough.
Answer:
See a tractor is more slow but has a greater force and a car is fast but has a slower force
Explanation:
so your answer is Tractors have more force then cars