Imagine a third particle, which we will call a cyberon. It has three times the mass of an electron (3m). It has a positive charge that is three times the magnitude (3qe) of the charge on an electron. What is the ratio of the speed vc that the cyberon would have when it reaches the upper plate after being released from rest at position h0 to the speed ve that the electron would have

Explanation:

Let the potential difference between plate be V .

Electrical energy lost for cyberon = V x 3e

Kinetic energy lost by cyberon = kinetic energy gain by it

V x 3e = 1/2 x 3m x vc²

For electron , the above equation becomes

V x e = 1/2 x m x ve²

Dividing the two equations

1 = vc² / ve²

vc = ve .

vc / ve = 1 .

i don't understand is there any other way you can rephrase it plz let me know in the comments and i will do it.

explanation:

answer would be letter choice (a),   a ball resting on a shelf. would be another example of potential energy   >   stored energy > not moving.

a ball spinning on a finger   >   kinetic energy > moving energy

a ball rolling on the ground   >   kinetic energy   > moving energy

a   ball flying through the air   > kinetic energy   >   moving energy

hope that                                         : )