When an object is approached electrostatically charged to a neutral body it is possible to charge it by induction, however, if it is touched for a moment the object will be charged by contact, explain this phenomenon, why this happens

When the charge body touches the other body, charge pass from it to the other body until get the charge is distributed over the largest possible surface, when separating the two bodies they are charged, but with half the initial charge, this phenomenon is called contact charge

Explanation:

When a charged body approaches another body, it attracts or repels the electrons of the other body, until the net charge is zero, that effect disappears when the body moves away.

When the charge body touches the other body, charge pass from it to the other body until get the charge is distributed over the largest possible surface, when separating the two bodies they are charged, but with half the initial charge, this phenomenon is called contact charge

acceleration = (change in speed) / (time for the change)

change in speed = (20-120)= -100 m/s.

1.5 min = 90 sec

acceleration = -100/90 = -1.11 m/s^2.

we don't care about the 150kg or the 2,500 meters. they don't make any difference.

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