Answer:
A
Step-by-step explanation:
Mechanical energy (ME) is Kinetic energy + potential energy
Where
Kinetic Energy (KE) = 1/2 * m * v^2
where m is the mass (in kg) and v is the speed of the object (in m/s)
and
Potential Energy (PE) = m*g*h
Where m is the mass (in kg) and g is the gravitational constant (9.81 m/s) and h is the height (in meters)
Hence
ME = KE + PE (note the pendulum DOES NOT have any speed, so v = 0, and thus KE = 0)
So,
Hence, Mechanical Energy is 9.8 Joules (rounded to 1 decimal place). Correct answer is A.
√102 = 10.09950494.....
So 10.09950494..... to the nearest tenth would be 10.10, because 9 comes AFTER 5 so we will go to the next number which would make the number 10.10.
SO, √102 ≈ 10.10.
Hope I helped ya!!!☺☺☺☺
Answer:
Step-by-step explanation:
I’m not sure but I think 8
The conversion is given as 1, 760 feet per second
<h3>How to convert the value</h3>
We need to convert 20miles per hour to feet per second
First, we should convert miles to feet
1 mile = 5280 feet
Then,
20 miles = x
Cross multiply
20 × 5280 = x
x = 105, 600
Per hour = I hour = 60 seconds
To find the conversion, we divided the conversion to feet by that of the time
= 105, 600/60
= 1, 760 feet per second
Thus, the conversion is given as 1, 760 feet per second
Learn more about distance conversion here:
brainly.com/question/2695274
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