allenjacobnarra
allenjacobnarra allenjacobnarra
  • 23-10-2020
  • Physics
contestada

Compute for the total mechanical energy of a 3.5 kg baseball dropped from a height of 3 meters moving at a speed of 10 m/s.

Respuesta :

lublana
lublana lublana
  • 28-10-2020

Answer:

277.9 J

Explanation:

We are given that

Mass,m=3.5 kg

Height=3 m

Speed,v=10 m/s

Kinetic energy of baseball=[tex]K.E=\frac{1}2}mv^2[/tex]

[tex]K.E=\frac{1}{2}(3.5)(10)^2=175 J[/tex]

Potential energy of baseball=P.E=mgh

g=[tex]9.8m/s^2[/tex]

Substitute the values

Potential energy of baseball=[tex]3.5\times 9.8\times 3=102.9 J[/tex]

Total mechanical energy=K.E+P.E

Total mechanical energy=175+102.9=277.9 J

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