Investigate how the potential and kinetic energy of the skater change as the skater moves from the top of the ramp to the bottom. …
The higher the skater is the more potential energy he has
. As his height decreases, his potential energy decreases and his kinetic energy increases.
How do the potential energy and the kinetic energy change when the skateboarder is at the top or the bottom of the hill Why do you think this change occurs?
As the skateboarder goes down the ramp,
potential energy is converted to kinetic energy
. Because of friction, some of the energy in the system is converted to heat energy. Once the kinetic energy is converted to heat, the energy cannot be converted back to the potential or kinetic energy in the system.
What is the kinetic and potential energy of the skater?
As the skateboarder moves, her
potential energy is converted to kinetic energy (KE)
, or the energy of motion as her position changes along the track and the velocity changes. The maximum amount of kinetic energy the skateboarder can have is entirely dependent on the amount of potential energy of the system.
How does increasing the mass of the skater affect the kinetic energy of the skater?
Mass affects / does not affect the amount of energy. As an object falls in
gravity
, kinetic energy increases / decreases / remains the same.
How does energy transfer from kinetic to potential when a person is skateboarding?
As the skater goes down the ramp, she loses height but gains speed. The
potential energy she loses is equal to the kinetic energy she gains
. As the skater speeds along the bottom of the ramp, all of the potential energy has changed to kinetic energy. Her mechanical energy remains unchanged.
At what position is the kinetic energy of the skater the highest?
At the top of the ramp, before he starts moving downward, the skateboarder has zero KE, due entirely to the fact that he is not moving. At
the bottom of the ramp
, the skateboarder has maximum KE because he is moving at the fastest speed.
What is the relationship between kinetic and potential energy?
The primary relationship between the two is
their ability to transform into each other
. In other words, potential energy transforms into kinetic energy, and kinetic energy converts into potential energy, and then back again.
What does it mean when a skater has a lot of kinetic energy?
With gravity, the potential energy is proportional to how high from ground level the skateboarder is: the higher the skateboarder, the more potential energy she has. … When she reaches the bottom of the half-pipe, she has lost all her potential energy but has a lot of kinetic energy in the form
of a high speed
.
How does potential energy change when height is increased?
Since the gravitational potential energy of an object is directly proportional to its height above the zero position, a doubling of the height will result in
a doubling of the gravitational potential energy
. A tripling of the height will result in a tripling of the gravitational potential energy.
Which point has the most potential energy?
Gravitational potential energy is greatest
at the highest point of a roller coaster
and least at the lowest point.
What type of energy does the skater have at the 2 meter mark?
The skater has
mechanical/gravitational potential energy
at the two meter mark. The skater gets to two meters high on the other end of the ramp. In terms of the conservation of energy, the skater will never go higher than two meter on the other end of the the ramp because energy can be neither created nor destroyed.
What is the best example that something has kinetic energy?
A bicycle or skateboard in motion
possesses kinetic energy. Running water has kinetic energy and it is used to run water mills. Moving air has K.E and is used to derives windmills and push sailing boats, similarly, a bullet fired from a gun has kinetic energy and can penetrate into a target because of its K.E.
What do you notice about the relationship between potential and kinetic energy and the path of the coaster?
Potential energy builds as the coaster is going up the loop-the-loop and converts to kinetic energy on the way down and out of the loop-the-loop
. The potential energy of the coaster is at its lowest and the kinetic energy is at its highest as the coaster moves in the lowest point of the loop-the- loop.
Where at what letter A B C D would the skateboarder have the most kinetic energy?
Now, we are ready to answer the question. The skater possesses the most KE at
point B
: remember total energy is a constant and at point B the skater has the least amount of potential energy (since they are at their lowest point above the ground). This means that the skater must have more kinetic energy at point B.
What is the kinetic energy at the bottom of the ramp?
Create another work-energy equation for the gravitational potential energy, kinetic energy, and work done by friction for the way down the ramp. The expression for the kinetic energy at the bottom of the ramp contains
the final speed of the block
. You should find the speed at the bottom of the ramp to be 9.44 m/s.
What happens to potential energy as kinetic energy increases or decreases?
In all physical processes taking place in closed systems, the amount of change in kinetic energy is equal to the amount of change in potential energy. If the kinetic energy increases, the
potential energy decreases
, and vice-versa.
