Mechanical energy lost is 127 J So, Option 'A' is the correct answer to the following question.
Mechanical energy based problem:
What information de we have?
Mass of brick = 1.5 kg
Velocity = 13 m/s
Time taken = 4.8 second
Mechanical energy lost = [KE(Final)] - [KE(Initial)]
Mechanical energy lost = [(1/2)(m)(v²)] - [(1/2)(m)(u²)]
Mechanical energy lost = [(1/2)(1.5)(0²)] - [(1/2)(1.5)(13²)]
Mechanical energy lost = 0.75 - [(1/2)(253.5)]
Mechanical energy lost = 0.75 - 126.75
Mechanical energy lost = 126 J or 127 J (Approx.)
Find out more information about 'Mechanical energy'.
https://brainly.com/question/13552918?referrer=searchResults
