An example of the conversion of gravitational potential energy into kinetic energy is
a
a raindrop
b
a burning candle
c
a hockey PUC sliding on ice
d
a football player running with the ball
e
the running motor in a car
c: A hockey puck sliding on ice
The correct answer is "c. a hockey puck sliding on ice."
When discussing the conversion of gravitational potential energy into kinetic energy, we need to consider the effect of gravity on an object and how it affects its motion. Gravitational potential energy refers to the energy an object possesses due to its position in a gravitational field, such as being raised above the ground.
In the case of a hockey puck sliding on ice, the conversion occurs as follows:
1. Gravity acts on the hockey puck, giving it potential energy due to its height above the ground.
2. When the puck is released or slides down a slope (such as a hill or an inclined plane), the gravitational potential energy starts to decrease.
3. As the puck descends, its potential energy is converted into kinetic energy, which is the energy of motion.
4. The kinetic energy of the hockey puck increases as it accelerates due to gravity.
5. The higher the initial position of the puck and the longer it accelerates due to gravity, the more the potential energy is converted into kinetic energy.
Therefore, the correct example of converting gravitational potential energy into kinetic energy is a hockey puck sliding on ice.
The correct answer is:
c) a hockey puck sliding on ice
When a hockey puck is lifted above the ground, it possesses gravitational potential energy due to its height above the ground. As the puck is released and falls, this potential energy is converted into kinetic energy, which is the energy of motion. As the puck slides across the ice, it gains kinetic energy and its speed increases. Therefore, the conversion of gravitational potential energy into kinetic energy occurs in this scenario.