the speed of a car travelling along a straight road decreases uniformly from 12.0 ms^-1 to 8.0 ms^-1 over 88.0 m. Calculate the acceleration of the car and the time of the car traveling over 88.0m

The electric field between square plates of a parallel-plate capacitor has magnitude e. the potential across the plates is maintained with constant voltage by a battery as they are pulled apart to twice their original separation, which is small compared to the dimensions of the plates. the magnitude of the electric field between the plates is now equal to a)e b)e/4 c)e/2 d)4e e)2e