Answer:
Explanation:
Given
Child falls a height of 
Applying conservation of energy we can write
Loss in Potential energy=Gain in kinetic energy





Thus child reaches a velocity of 4.42 m/s
Answer:
a) It reduces the kinetic energy loss of the stunt person.
Well, since your mom is as fat as the earth, I’m guessing the carbon atom will go to your mom next
<span>Human ear can hear the lowest frequency about 20 Hz, this is 20 vibrations per second. Vibrations of pendulum are very small and frequency is less than 20 Hz, so we can't hear it.</span>