Is it possible for the total mechanical energy of a moving particle to be negative?
A)No,because a moving particle has positive kinetic energy.
B)No,because potential energy cannot have a value more negative than the value of the positive kinetic energy of the particle.
C)Only if friction is involved.
D)yes

Question

Quizplus · Accepted Answer

Yes, it is possible for the total mechanical energy of a moving particle to be negative. 
This can happen when the potential energy associated with the particle's position is more negative than the particle's kinetic energy. For example, if a particle is moving in a region with a strong gravitational field that is increasing in strength, the potential energy can become more negative than the kinetic energy, leading to a negative total mechanical energy. Another example is a particle initially launched upwards with a velocity that is not enough to escape the gravitational field of the earth, and eventually coming back down to the surface, where it can have negative total mechanical energy due to its kinetic energy being less than the potential energy.

Is It Possible for the Total Mechanical Energy of a Moving