Consider the moment immediately before the puck is released. At that moment, the kinetic energy, the gravitational potential energy, and the elastic potential energy are, respectively, Select the best answer from the choices provided. Select the best answer from the choices provided.

-zero, at a maximum, and at a maximum

-at a maximum, zero, and zero

-zero, at a maximum, and zero

-at a maximum, at a maximum, and zero

-zero, zero, and at a maximum

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:

where:

m= mass of the body

acceleration due to gravity

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:

here

mass of the body

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.

where:

elasticity of the puck material

deformation of the puck

the total distance traveled by the car is

30km + 49km = 79 km .

a sonic boom is a loud boom that breaks the sound barrier

explanation: