Question

how can you tell if an object has elastic properties?
if two people pull on it, it maintains its original size and shape.
if two people pull on it in opposite directions, it stretches and remains in a new shape.
if two people pull on it in opposite directions, it falls apart.
if two people pull on it in opposite directions, it stretches. then when they let it go, it returns to its original size and shape.

Explanation:

To determine if an object has elastic properties, we recall that elasticity means an object can deform (stretch, etc.) under force and then return to its original shape and size when the force is removed.

• The first option describes an object with no deformation (not elastic).
• The second option describes plastic deformation (stays in new shape, not elastic).
• The third option describes a brittle object (breaks, not elastic).
• The fourth option: pulling (applying force) causes stretching (deformation), and releasing the force makes it return to original size and shape, which matches the definition of elasticity.

Answer:

D. If two people pull on it in opposite directions, it stretches. Then when they let it go, it returns to its original size and shape.