Which statement describes a good physical property of copper
2 answers:
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Answer:
greater than your true weight
Explanation:
When going up in an elevator the acceleration of the elevator is added to the acceleration due to gravity. This will increase the reading on the scale.
The expression of the resultant weight will be
where,
m = Mass of the person
g = Acceleration due to gravity = 9.81 m/s²
a = Acceleration of the elevator.
Hence, the reading on the scale is <u>greater than your true weight.</u>
Answer: 15.87 m
From the equation of motion:
where, is the distance traveled,
is the initial velocity,
is the acceleration and
is the time.
The rock free falls under gravity. Initial velocity, ,
It took for rock to hit the water.
Substitute the values in the given equation:
Hence, the water is 15.87 m below the top level of the well.