Which of the following is an example of kinetic energy transfer?
1. A large snowball sitting at the top of a hill.
2. Xavier pushing Brad down the snowy hill on a sled.
3. A car driving up a steep hill
4. Jules sitting in a chair
2. Xavier pushing Brad down the snowy hill on a sled.
To determine which of the options is an example of kinetic energy transfer, we need to understand what kinetic energy is. Kinetic energy is the energy possessed by an object due to its motion. When an object is in motion, it has kinetic energy. So, we're looking for a scenario where an object is transferring its kinetic energy to something else.
Let's go through each option to see if it fits the criteria:
1. A large snowball sitting at the top of a hill: In this scenario, the snowball is not in motion, so it does not have kinetic energy. Therefore, it does not involve kinetic energy transfer.
2. Xavier pushing Brad down the snowy hill on a sled: In this scenario, the sled is being pushed down the hill, and it is in motion. The sled and Brad both have kinetic energy because they are moving. Thus, this option involves kinetic energy transfer.
3. A car driving up a steep hill: In this scenario, the car is in motion, but it is not transferring its kinetic energy to anything else. Therefore, this option does not involve kinetic energy transfer.
4. Jules sitting in a chair: In this scenario, Jules is not in motion, and therefore, does not possess kinetic energy. This option does not involve kinetic energy transfer.
Based on the analysis above, the only example of kinetic energy transfer is option 2: Xavier pushing Brad down the snowy hill on a sled.