Final answer:
The speed of a penny when it hits the ground after being dropped from the top of the Chrysler Building can be calculated using the formula for free fall velocity in physics, with the acceleration due to gravity and the height of the building being the key factors.
Step-by-step explanation:
To determine how fast a penny is moving when it hits the ground after being dropped from the top of the Chrysler Building, one can use the principles of physics related to free fall and gravitational acceleration. The equation of motion for an object in free fall under gravity, with air resistance neglected, is given by v = sqrt(2gh), where v is the final velocity, g is the acceleration due to gravity (approximately 9.81 m/s2), and h is the height from which the penny is dropped. Substituting the given values: v = sqrt(2 * 9.81 m/s2 * 320 m), we then calculate the final velocity just before impact.