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Sagot :
The formula for kinetic energy is, [tex]{ E }_{ k }=\frac { 1 }{ 2 } \cdot m\cdot { v }^{ 2 }[/tex]
where m is mass and v is velocity.
Let's plug the given values in the formula.
[tex]{ E }_{ k }=\frac { 1 }{ 2 } \cdot m\cdot { v }^{ 2 }\\ \\ { E }_{ k }=\frac { 1 }{ 2 } \cdot 8\cdot { 4 }^{ 2 }\\ \\ { E }_{ k }=\frac { 1 }{ 2 } \cdot 8\cdot 16\\ \\ { E }_{ k }=4\cdot 16\\ \\ { E }_{ k }=64\quad \\ \\ [/tex]
It's kinetic energy is 64 Joules.
where m is mass and v is velocity.
Let's plug the given values in the formula.
[tex]{ E }_{ k }=\frac { 1 }{ 2 } \cdot m\cdot { v }^{ 2 }\\ \\ { E }_{ k }=\frac { 1 }{ 2 } \cdot 8\cdot { 4 }^{ 2 }\\ \\ { E }_{ k }=\frac { 1 }{ 2 } \cdot 8\cdot 16\\ \\ { E }_{ k }=4\cdot 16\\ \\ { E }_{ k }=64\quad \\ \\ [/tex]
It's kinetic energy is 64 Joules.
Kinetic energy = (1/2) (mass) (speed)²
Kinetic energy = (1/2) (8 kg) (4 m/s)² =
(4 kg) (16 m²/s²) =
64 (kg-m/s²) (m) = 64 newton-m = 64 joules
And may I say . . . that is one fat cat ! (about 17.6 pounds)
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