How can a hockey puck explain the transfer of kinetic energy? **Select all that apply.**
a
Kinetic energy transfers through air when materials are close.
b
Kinetic energy is lost when it transfers between materials.
c
Energy transfers from materials through touch.
d
Kinetic energy can move from one item to another.
b, c, d
The correct options for explaining the transfer of kinetic energy using a hockey puck are:
a) Kinetic energy transfers through air when materials are close.
c) Energy transfers from materials through touch.
d) Kinetic energy can move from one item to another.
Explanation:
When a hockey puck is in motion, it possesses kinetic energy. This energy can be transferred to other objects or materials through different mechanisms.
Option a is correct because when the hockey puck is moving through the air, it displaces air molecules, transferring some of its kinetic energy to the air molecules. This is known as energy transfer through air.
Option c is correct because when the hockey puck comes in contact with another object or material, such as another puck, a stick, or the boards, the kinetic energy can be transferred through touch or collision. The energy from the moving puck is transferred to the other object, causing it to move or change its motion.
Option d is correct because kinetic energy can indeed move from one object or material to another. In the case of a hockey game, the puck can transfer its kinetic energy to other pucks, sticks, players, or even the goal net when it is shot. The transfer of kinetic energy allows for the dynamic motion and action in the game of hockey.
Option b is incorrect because kinetic energy is not "lost" when it transfers between materials. It may be partially transferred or transformed into other forms of energy, such as heat or sound, but it is never completely lost. The total amount of kinetic energy in a closed system is conserved.
c
Energy transfers from materials through touch.
d
Kinetic energy can move from one item to another.