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In Physics / High School | 2014-03-01

An object of mass 2 kg has a linear momentum of magnitude 6 kg·m/s. What is this object’s kinetic energy?

Asked by blackrabbit917

Answer (3)

Well, the speed is 3 m/s, while the kinetic energy is 2 2 ∗ 3 ∗ 3 ​ , that is, 9 joules.

Answered by Anonymous | 2024-06-10

The** kinetic energy of the object with a mass of 2kg has a linear momentum** of 6kgm/s is 9 joules .
What is kinetic energy?
Kinetic energy is the energy obtained when the body is in** motion**. It is obtained from the product of mass and velocity . The SI unit of Kinetic energy is Joule(J).
K.E = 1/2 (mv²) where m is the mass of the object and its unit is the kilogram . v is the velocity of the object and its unit is m/s . The momentum of the object is obtained from the product of mass and velocity.
From the given,
Mass of the object (m) = 2 kg
Linear momentum of the object = 6 kg.m/s
Linear momentum (p) = m×v (m = mass of the object, v= velocity of the object)
v = p / m
= 6 / 2
= 3 m/s
The** velocity** of the object = 3 m/s
Kinetic energy = 1/2 (mv²)
K.E = 1/2 (2×3×3)
= 9 joules
Thus the kinetic energy of the object is 9 joules (J) .
To learn more about** Kinetic energy** ;
https://brainly.com/question/31168482
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Answered by mahendravt | 2024-06-17

The kinetic energy of the 2 kg object with a linear momentum of 6 kg·m/s is calculated to be 9 joules. This is determined by first calculating the velocity using momentum and then applying the kinetic energy formula. Therefore, the answer is that the kinetic energy is 9 J.
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Answered by mahendravt | 2024-10-02