Question

the total energy of the rubber band is 3 units.
at a certain point after the rubber band is released, its kinetic energy is 2 units.
how many units of potential energy are there?
3 units
1 unit
0 units
2 units

Explanation:

Step1: Recall energy conservation (total = kinetic + potential)

Total energy \( E_{total} = 3 \) units, Kinetic energy \( E_{kinetic} = 2 \) units. Let potential energy be \( E_{potential} \). So \( E_{total} = E_{kinetic} + E_{potential} \).

Step2: Solve for potential energy

Rearrange formula: \( E_{potential} = E_{total} - E_{kinetic} \). Substitute values: \( E_{potential} = 3 - 2 = 1 \) unit.

Answer:

1 unit (corresponding to the option "1 unit")