A small sphere with mass 5.00 x 10⁻⁷ kg and charge +7.00 μC is released from rest a distance of 0.400 m above a large horizontal insulating sheet of charge that has uniform surface charge density σ = +8.00 pC/m².
Using energy methods, calculate the speed of the sphere when it is 0.100 m above the sheet.

a straight line sloped

it doesn't. it was imagined up in the middle ages.

c) up

hope this

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.