False, insomnia is the difficulty to fall asleep repeatedly. Missing one night of sleep wouldn't make you an insomniac but missing sleep every other night or not being able to sleep would.
Explanation:
For each point:
PE = mgh
KE = ½ mv²
ME = PE + KE
Since energy is conserved, ME will be constant.
I'll be using g = 10 m/s².
A. PE = (100 kg) (10 m/s²) (102 m) = 102,000 J
KE = ½ (100 kg) (0 m/s)² = 0 J
ME = 102,000 J
B. KE = ½ mv²
18,000 J = ½ (100 kg) v²
v = 60 m/s
ME = 102,000 J
PE = ME − KE = 84,000 J
(100 kg) (10 m/s²) h = 84,000 J
h = 84 m
C. KE = ½ (100 kg) (29 m/s)² = 42,050 J
ME = 102,000 J
PE = ME − KE = 59950 J
(100 kg) (10 m/s²) h = 59950 J
h = 59.95 m
d. PE = (100 kg) (10 m/s²) (60 m) = 60,000 J
ME = 102,000 J
KE = ME − PE = 42,000 J
½ (100 kg) v² = 42,000 J
v = 29.0 m/s
E. PE = (100 kg) (10 m/s²) (0 m) = 0 J
ME = 102,000 J
KE = ME − PE = 102,000 J
½ (100 kg) v² = 102,000 J
v = 45.2 m/s
Answer:
D the lithospers and the athenosphere
Explanation:
They are the first crusts
Missy's velocity is 24.5 m/s
Explanation:
The kinetic energy of an object is the energy possessed by the object due to its motion. Mathematically, it is given by
![K=\frac{1}{2}mv^2](https://tex.z-dn.net/?f=K%3D%5Cfrac%7B1%7D%7B2%7Dmv%5E2)
where
m is the mass of the object
v is its velocity
In this problem, we know:
K = 15000 J is Missy's kinetic energy
m = 50 kg is her mass
Solving for v, we find her velocity:
![v=\sqrt{\frac{2K}{m}}=\sqrt{\frac{2(15000)}{50}}=24.5 m/s](https://tex.z-dn.net/?f=v%3D%5Csqrt%7B%5Cfrac%7B2K%7D%7Bm%7D%7D%3D%5Csqrt%7B%5Cfrac%7B2%2815000%29%7D%7B50%7D%7D%3D24.5%20m%2Fs)
Learn more about kinetic energy:
brainly.com/question/6536722
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Work = Force * distance
Work = 20 N * 10 m = 200 Nm
Work = 200 Joules.