Question

group practice - energy poster: energy poster checklist: both potential and kinetic energy is present in every scenario. with your group design a poster that clearly: displays the motion of the scenario. states where and how energy is present in the scenario. states what type of energy is present at this point. scholars should be able to understand your poster without an explanation, let the poster speak! group 1: water in a dam: - where is potential energy present? - where is kinetic energy present? - when does potential become kinetic? group 2: an archer’s bow: - where is potential energy present? - where is kinetic energy present? - when does potential become kinetic?

Explanation:

Step1: Analyze water in dam

The water at a height in the dam has gravitational - potential energy due to its position relative to the lower levels.

Step2: Identify kinetic energy in water in dam

When the water is released and starts flowing downwards (e.g., through turbines), it has kinetic energy because of its motion.

Step3: Determine energy conversion in water in dam

Potential energy becomes kinetic when the water is allowed to fall from its elevated position in the dam.

Step4: Analyze archer's bow

The bow has elastic - potential energy when it is drawn back, as the bowstring and the bow are deformed.

Step5: Identify kinetic energy in archer's bow

When the bowstring is released and the arrow is propelled forward, the arrow has kinetic energy.

Step6: Determine energy conversion in archer's bow

Potential energy becomes kinetic when the bowstring is released and the stored elastic - potential energy is transferred to the arrow as kinetic energy.

Answer:

Group 1: Water in a Dam

• Where is potential energy present? The water at the higher levels in the dam has gravitational - potential energy.
• Where is kinetic energy present? When the water is flowing out (e.g., through turbines).
• When does potential become kinetic? When the water is allowed to fall from its position in the dam.

Group 2: An Archer's Bow

• Where is potential energy present? In the drawn - back bowstring and bow (elastic - potential energy).
• Where is kinetic energy present? In the moving arrow after the bowstring is released.
• When does potential become kinetic? When the bowstring is released.