Answer:
<em>U = 66,150 J</em>
Explanation:
<u>Gravitational Potential Energy</u>
Gravitational potential energy is the energy stored in an object because of its vertical position or height in a gravitational field.
It can be calculated with the equation:
U=m.g.h
Where m is the mass of the object, h is the height with respect to a fixed reference, and g is the acceleration of gravity or 
.
The child of mass m=45 Kg is perched above a h=150 m ravine. His gravitational potential energy is:
U = 66,150 J
Answer
given,
mass of railroad = 2060 Kg
mass of sumo wrestler = 241 Kg
speed = 5.3 m/s
a) using conservation of momentum
m v = (m + M) V
241 x 5.3 = (241 + 2060)V
V = 0.556 m/s
b) Let v be the relative speed
Again using conservation of momentum
241 x 5.3 =241 x (5.3+v) + 2060 v
241 x 5.3 =241 x 5.3+241 x v + 2060 v
2301 v = 0
v = 0 m/s
c) the speed of the flatcar if he then turns and run sat 5.3 m/s relative to the flat car opposite his original direction
241 x 5.3 =241 x (v - 5.3) + 2060 v
241 x 5.3 = - 241 x 5.3+241 x v + 2060 v
2301 v = 2554.6
v = 1.11 m/s
False because the first law of motion is the crash I think I’m in middle school
Answer:
Temperature in Fahrenheit will be 124.52°F and in kelvin 324.4 K
Explanation:
We have given temperature in of silver in degree Celsius as 
We have to convert this temperature in Fahrenheit and kelvin
For Fahrenheit
Temperature in Fahrenheit = 
For kelvin
In kelvin = 51.4+273 = 324.4 K
So temperature in Fahrenheit will be 124.52°F and in kelvin 324.4 K
The frequency of oscillation on the frictionless floor is 28 Hz.
<h3>
Frequency of the simple harmonic motion</h3>
The frequency of the oscillation is calculated as follows;
f = (1/2π)(√k/m)
where;
- k is the spring constant
- m is mass of the block
f = (1/2π)(√7580/0.245)
f = 28 Hz
Thus, the frequency of oscillation on the frictionless floor is 28 Hz.
Learn more about frequency here: brainly.com/question/10728818
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