A peregrine falcon is the fastest animal in the world. When it dives, it can accelerate to
1 answer:
The speed of the falcon is 144 km/h
Explanation:
The speed of a body is a scalar quantity telling how fast the object is moving, without giving any information about its direction.
It can be calculated as:
where
d is the distance covered
t is the time taken
In this problem, the falcon has a speed of
We want to convert it into km/h. Let's keep in mind that:
1 km = 1000 m
1 h = 3600 s
Therefore, we convert as follows:
Learn more about speed:
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Answer:
Explanation:
The textbooks say that the maximum range for projectile motion (with no air resistance) is 45 degrees.
Answer:
a) see attached, a = g sin θ
b)
c) v = √(2gL (1-cos θ))
Explanation:
In the attached we can see the forces on the sphere, which are the attention of the bar that is perpendicular to the movement and the weight of the sphere that is vertical at all times. To solve this problem, a reference system is created with one axis parallel to the bar and the other perpendicular to the rod, the weight of decomposing in this reference system and the linear acceleration is given by
Wₓ = m a
W sin θ = m a
a = g sin θ
b) The diagram is the same, the only thing that changes is the angle that is less
θ' = 9/2 θ
c) At this point the weight and the force of the bar are in the same line of action, so that at linear acceleration it is zero, even when the pendulum has velocity v, so it follows its path.
The easiest way to find linear speed is to use conservation of energy
Highest point
Em₀ = mg h = mg L (1-cos tea)
Lowest point
Emf = K = ½ m v²
Em₀ = Emf
g L (1-cos θ) = v² / 2
v = √(2gL (1-cos θ))
