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When a child rides a skateboard down an inclined ramp when the skateboard gets to exactly onehalf the starting height the child's kinetic energy?
Wiki User
∙ 13y ago
First off an assumption: dissipative forces are negligible - this means no energy goes into overcoming friction and air resistance. It also means that the total energy of the system "U" is a constant.
The total energy is the sum of the kinetic and potential energies:
U=Ke+Pe
Potential energy is a function of height and mass, kinetic is a function of mass and velocity. So at the top when the skateboard isn't moving:
Ke=1/2mv2 =0 as velocity =0
Pe=mgh
U=Pe+0=mgh Where h is the full height of the ramp.
Halfway down the ramp the height =h/2 so
Pe=mgh/2
Remembering U must be the same as it was at the top of the ramp:
U=mgh=Pe+Ke=mgh/2 +Ke
So solving gives Ke=mgh/2.
Wiki User
∙ 13y ago
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What kind of energy does a skate board have?
In physics, the kinetic energy of an object is the energy that the object possess, due to the fact that the object is moving. When the object/skateboard isn't moving it has no kinetic energy. However when it is given energy such as a push, it would move and keep going until it is stopped by another force, such as a wall.
What energy transformation takes place when an object is pushed up an inclined plane?
chemical energy -----> potential energy -------> kinetic energy
A wooden block is released from rest at the top of a frictionless inclined plan and slides down to the bottomWhat convertions of energy are taking place as the block goes down the inclined plane?
Gravitational potential energy is converted into kinetic energy.
What type of energy is formed when a sledge and it's passengers are sliding down a slope starting from rest?
i have exactly the same sheet that u have i think it starts with potential energy then ends with kinetic.
What are the effects of kinetic energy?
You need to rethink your question. Kinetic energy is the energy that an object possesses because of its motion. Exactly what is it that you want to know?
What is the maximum kinetic energy on the inclined plane?
1
What kind of energy does a skate board have?
In physics, the kinetic energy of an object is the energy that the object possess, due to the fact that the object is moving. When the object/skateboard isn't moving it has no kinetic energy. However when it is given energy such as a push, it would move and keep going until it is stopped by another force, such as a wall.
How do you increase the kinetic energy of a skateboard?
Since kinetic energy depends on mass and speed, you can increase either of these.
Where is the maximum kinetic energy on the inclined plane?
At the point where the velocity is the maximum
What type of energy is when the motion of a skateboard?
A moving skateboard has kinetic energy. If it is moving down an incline, it also has potential energy that is converted to kinetic energy as it gains speed. If its moving up an incline, kinetic energy is converted to potential energy as it loses speed.
How can a skateboard do what it does?
This is a mighty vague question, but I'll give it a shoot. A skateboard has wheels - when these wheels are acted upon by a force (such as you pushing it), they proceed to take the energy from that force and change it into centrifugal and centripetal forces- this causes the wheels on your skateboard to turn. Your skateboard won't roll indefinitely from 1 push because while your skateboard is rolling it is creating friction with the sidewalk you're skateboarding on. Friction is caused when 2 objects rub up against each other - this creates heat and a transfer of kinetic energy. Once all the kinetic energy has been transferred from your skateboard's wheels to the sidewalk, your skateboard come to a stop.
Does kinetic energy decreases as a box accelerates down an inclined plane?
Kinetic energy increases; potential energy decreases, because the object is now in motion
How does the energy in a skateboard change as it goes down hill?
the skateboards potential energy becomes kinetic energy and heat energy.
What is exactly kinetic energy?
Vector energy, mcV.
Which examples illustrates an object with kinetic energy?
A skateboard rolling across the street A hockey puck sliding across the ice
What an example of kinetic energy?
Any motion of anything is kinetic energy. A moving vehicle on a road has kinetic energy. A Bowling ball rolling down the lane has kinetic energy. A falling rock has kinetic energy.Here examples of kinetic energy: moving a skateboard, a Basketball passing through a hoop, someone climbing a ladder, wind blowing, and when a rubber band is zinged from your finger.
What energy transformation takes place when an object is pushed up an inclined plane?
chemical energy -----> potential energy -------> kinetic energy
