thatkidbryana
thatkidbryana thatkidbryana
  • 21-02-2017
  • Physics
contestada

What’s the velocity of an 11-kilogram object with 792 joules of kinetic energy?

7 m/s
8 m/s
9 m/s
11 m/s
12 m/s

Respuesta :

lazieriachappel
lazieriachappel lazieriachappel
  • 21-02-2017
12 m/s is the answer
 

Answer Link
IlaMends IlaMends
  • 21-01-2019

Answer: The velocity of the object is 12 m/s.

Explanation:

Mass of the object = 11 kg

Velocity of the object = v

Kinetic energy possessed by the object  = 792 Joules

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

[tex]792 Joules=\frac{1}{2}\times 11\times v^2[/tex]

[tex]v=\sqrt{\frac{2\times 792 J}{11}}=12 m/s[/tex]

Hence, the velocity of the object is 12 m/s.

Answer Link

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