On earth, a ball of mass 0.5kg is kicked straight up. How much GPE does it have at its highest point 6m off the ground

Because light travels in a straight line and casts a shadow, isaac newton hypothesized that light is

What is a good example of instantaneous speed

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