Answer:
The distance between the person and the balloon after 2 seconds the person starts walking is changing on 4.47 m/s
Explanation:
The relative position between the balloon and the person is found using Galileo's relativity principle:
(1)
with Rb the position of the balloon and Rp the position of the person respect with the origin (See Figure 1). Because we don’t have those positions but we know the constant velocities, we can relate the positions (R) with the velocities (v) with the kinematic equation:
(2)
So equation (1) is:
(3)
with 
and 
the unitary vectors on y and x direction respectively.
We see from our initial condition (See figure 2) that:
(4)
So if we put this on (3) and divide by time we have:
(5)
But we are interested in how fast a distance is changing, and that is a speed so:
Because trees get thier nutrients and energy from the sun. They absorb it through the leaves and it makes them grow strong. then someone cuts down the tree and makes the wood for your fire. So, the fire burns the wood that was made from the tree that got nutrients and grew from the sun.
Answer:
Explanation:
The change in kinetic energy will be simply the difference between the final and initial kinetic energies: 
We know that the formula for the kinetic energy for an object is:
where <em>m </em>is the mass of the object and <em>v</em> its velocity.
For our case then we have:
Which for our values is:
Answer: Whenever important physicists are discussed, Galileo Galilei, Isaac Newton, and Albert Einstein seem get the most attention. However, as you’ve seen, Galileo formulated or refined many of his discoveries and theories based on the findings of others who came before him, including Aristotle
Explanation:
Whenever important physicists are discussed, Galileo Galilei, Isaac Newton, and Albert Einstein seem get the most attention. However, as you’ve seen, Galileo formulated or refined many of his discoveries and theories based on the findings of others who came before him, including Aristotle
A. water is the universal solvent.
