From the Edge of a Roof Top You Toss a Green

question 126

Multiple Choice

From the edge of a roof top you toss a green ball upwards with initial speed v₀ and a blue ball downwards with the same initial speed.Air resistance is negligible.When they reach the ground below

• A)the green ball will be moving faster than the blue ball.
• B)the blue ball will be moving faster than the green ball.
• C)the two balls will have the same speed.

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Definitions:

Chondrichthyes

The class of cartilaginous fishes that includes the sharks, rays, and skates.

Lungs

Main organs of the respiratory system, involved in the exchange of oxygen from the atmosphere with carbon dioxide from the blood.

Evolved

A term referring to the process by which species undergo gradual changes in their genetic composition and traits over generations, often in response to environmental pressures.

Lungfishes

A group of freshwater fishes that have the ability to breathe air using lungs, in addition to gill breathing.