Respuesta :
Answer:
zero, at a maximum, and zero
Explanation:
Just before the release of the puck from a certain height the gravitational potential of the puck is highest because the puck is at the highest point and the gravitational potential energy is directly proportional to the height of the body above the earth.
Mathematically:
[tex]PE_g=m.g.h\\[/tex]
where:
m= mass of the body
[tex]g=[/tex] acceleration due to gravity
[tex]h=[/tex] height of the position of the body above the earth
Just before the release of the puck the velocity of the body is also zero so we can say that the kinetic energy of the puck is also zero because the kinetic energy of the body is the energy possessed by the virtue of the motion of the body.
Mathematically:
[tex]KE=\frac{1}{2}m.v^2[/tex]
here
[tex]m=[/tex] mass of the body
[tex]v=[/tex] velocity of the body
The the height above the earth since the puck is unstained therefore there is no elastic potential energy stored in the puck. Elastic potential energy is the energy possessed by the body by the virtue of its elastic deformation. Hence this energy is available in the puck only when it hits the earth and gets deformed.
[tex]PE_e=\frac{1}{2} k.x^2[/tex]
where:
[tex]k=[/tex] elasticity of the puck material
[tex]x=[/tex] deformation of the puck
Answer:
zero, maximum, zero
Explanation:
Before the puck is released, it is at rest so the kinetic energy is zero and then it is at a height so it has maximum gravitational potential energy and then the elastic potential energy is zero.
