kinetic energy because the bird is in motion
Answer:
50N increasing
Explanation:
it looks like we want the net force. this is the sum of all forces acting on the object. here the problem is extremely simplified and we are even given the values of force. this looks like the rocket is producing an upward force of 160 newtons. it also looks like maybe weight (gravity) and drag (air resistance) are producing downward force against the rocket. we can say those would be subtracting from the amount of upwards force. so 160-40-70=50N. since the force is positive that means we will still have a magnitude of force vector that points upward and so we will increase.
Answer:
22145.27733 ft
124984.76055 ft
Explanation:
The equation of pressure is

where,
=Atmospheric pressure = 800 mbar
k = Constant
h = Altitude = 35000 ft


Now


The altitude will be 22145.27733 ft


The elevation is 124984.76055 ft
Answer:

Explanation:
Given that
At starting separated = 1.20m
And the increase in background noise by Δβ = 5 dB, due to which the level of sound also rises
Based on the above information, the separation rf that is needed is shown below:
As we know that

Hence, the separation r_f i.e. required is 
We simply applied the above equation so that the correct separation could come