Question 1.9 - Chemistry: Molecular Nature Of Matter And Change

Question

For each pair, which has higher kinetic energy? (a) A sled resting at the top of a hill or a sled sliding down the hill (b) Water above a dam or water falling over the dam.

Step-by-Step Solution

Answer

Answer

 

Higher Kinetic energy from each pair is

1. Sled sliding down the hill
2. Water falling over the dam

Definition

Kinetic energy is the energy that an item or particle has due to its movement.

Determination of higher kinetic energy

a. Because kinetic energy is the energy an object gains while moving, a sled sliding down the hill has more kinetic energy than a sled resting at the top of the hill.

 

b. Because kinetic energy is the energy things gain while moving, water falling over the dam has more kinetic energy than the water above the dam.