Newton's second and third law can be found the correct answer is:
Pressure is defined by the relationship between forces and area,
P = F / A
Where P is pressure, F is force and A is area
F = P A
Newton's second law is that the sum of the external forces of a body is proportional to the mass of the body and the acceleration
Newton's third law or action and reaction says that forces in nature appear in pairs on the two interacting bodies, the magnitude of the force is equal, but in the opposite direction; each one is applied to one of the bodies.
A free-body diagram of the process is shown in the attachment
B + F - W = m a
W = m g
Where B is the thrust, F the force of air exit, W the weight, m the mass and the acceleration of the body
Archimedes' principle states that the vertical thrust on a body is equal to the fart of the dislodged fluid, in this case air.
B =ρ_{air} g V_{air}
Where ρ and V_ {air} are the density and volume of the air, respectively,
It's substitute
ρ_{air} g V_{air} + P A - m g = m a
a =
The mass of the body is formed by the mass of the balloon plus the mass of air that it contains
Let's analyze this expression in three moments
In conclusion with Newton's second and third law we find the correct answer is:
Learn more about Newton's law here:
Answer:
a) 1.20227 seconds
b) 0.98674 m
c) 7.3942875 m/s
Explanation:
t = Time taken
u = Initial velocity = 4.4 m/s
v = Final velocity
s = Displacement
a = Acceleration due to gravity = 9.81 m/s²
b) Her highest height above the board is 0.98674 m
Total height she would fall is 0.98674+1.8 = 2.78674 m
a) Her feet are in the air for 0.75375+0.44852 = 1.20227 seconds
c) Her velocity when her feet hit the water is 7.3942875 m/s
Answer:
Explanation:
Given
altitude of the Plane
When Airplane is away
Distance is changing at the rate of
From diagram we can write as
differentiate above equation w.r.t time
as altitude is not changing therefore
at
substitute the value we get
