The observation deck of tall skyscraper 370 m above the street. Determine the time required for a penny to free fall from the deck to the street below.
Assuming free-fall without air-resistance, then use
S=ut+(1/2)gt²
where S=370m, u=initial velocity=0
Solve for t:
370=(1/2)(9.81)t²
It should come out to about 8.5 or 8.6 seconds
To determine the time required for a penny to free fall from a height of 370 meters, we can use the laws of physics and the equations of motion.
The time it takes for an object to free fall can be calculated using the equation for time:
t = √(2h/g)
where:
t is the time in seconds
h is the height in meters
g is the acceleration due to gravity, approximately 9.8 m/s² on Earth
Now, let's substitute the given values into the equation:
t = √(2 * 370 / 9.8)
t ≈ √(74.898)
t ≈ 8.66 seconds (rounded to two decimal places)
Therefore, it will take approximately 8.66 seconds for a penny to free fall from the observation deck to the street below.
The observation deck of tall skyscraper 370 m above the street. Determine the time required for a penny to free fall from the deck to the street below.
v�0…5-u�0…5=2as
(0)�0…5-(u)�0…5=2(-9.8)(370)
u=85.15
v=u at
o=85.15 (-9.8)(t)
-85.15=(-9.8)t
8.6s= t