<span>21343 km / 150 km/hr = 142.29 hrs</span>
This process occurs because there is a contact between the carpet and the person's feet. Basically that contact generates the transfer of some electrons to the carpet on dry winter days.
In this way a person is charged when dragging bare feet on the carpet on a dry winter day.
Therefore, the net positive charge occurs on the surface of the carpet.
Answer;
B. The acceleration remains the same.
Explanation;
F = ma
the question said, F and M both are doubled ,so,
2F =2ma
but you can see the result is same !!
so acceleration doesn't change,
Therefore; final acceleration is also 2.2
