Which of the following statements is false:a)kinetic energy is positivb)potential energy is positivec)kinetic energy is negatived)potential energy is negativeCorrect answer is option 'C'. Can you explain this answer?

Question

Answer

K.E never negative as velocity negative then its square becomes it positive.

Answer

Kinetic energy is 1/2mv^2  and Square can never be negative so kinetic energy is always positive

Answer

K.E. of any ody can be given by {1/2)mv^2as KE is also a measure of how much energy the body posses when it is in motion...So whenever a body is in motion... it will have the respective energy as decided by formula..obviously the particle may move in any direction or be stationary.. that's why kinetic energy is never negative..

Answer

Potential Energy is Negative

- The statement 'potential energy is negative' is false. Potential energy can be positive, negative, or zero, depending on the reference point chosen.
- Potential energy is the energy possessed by an object due to its position or state. It is often measured relative to a reference point or a zero level. The choice of reference point determines whether the potential energy is positive, negative, or zero.
- When the reference point is chosen such that the object is at a lower potential energy state, the potential energy is positive. For example, if a ball is raised above the ground, it has gravitational potential energy, and this potential energy is positive compared to a reference point on the ground.
- On the other hand, if the reference point is chosen such that the object is at a higher potential energy state, the potential energy is negative. For example, if a ball is dropped below the ground level, it has negative gravitational potential energy compared to a reference point above the ground.
- In some cases, the reference point can be chosen such that the potential energy is zero. For example, when measuring the potential energy of a spring, the reference point is often chosen when the spring is at its equilibrium position. At this position, the potential energy of the spring is zero.
- Therefore, potential energy can have different values depending on the reference point chosen, and it is incorrect to say that potential energy is always negative.
- It is important to note that the choice of reference point is arbitrary, and it is often chosen for convenience or to simplify calculations. The absolute value of potential energy is more important in most cases, rather than its sign.

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