Question

energy
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8
6
4
2
0
ep
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a rubber band is being stretched. before its released, it has 3 units of elastic potential energy.
what is the total energy?
5 units
1 units
0 units
3 units

Explanation:

Step1: Analyze energy states

Before release, the rubber band is at rest (kinetic energy \( E_k = 0 \)) and has elastic potential energy \( E_p = 3 \) units.

Step2: Calculate total energy

Total energy \( E_{total}=E_p + E_k \). Substituting \( E_p = 3 \) and \( E_k = 0 \), we get \( E_{total}=3 + 0 = 3 \) units.

Answer:

D. 3 units