It can be a little complicated but I'll do my best to explain.
Quick Vocab: potential energy - the stored energy in an object because of its position, shape, or condition. Kinetic energy - the energy of an object due to its motion. The more potential energy an object has the more Kinetic energy it will have. Basically when the object is moved the potential energy is released and becomes kinetic energy. As the kinetic energy (speed) increases the Potential energy decreases.
So yes, when the potential energy decreases the speed increases.
Potential energy is not affected by speed.
Does speed 'effect' the gravitational potential energy of an object? No, but gravitational potential energy can be converted into kinetic energy - so the gravitational potential energy can effect the speed. Ep = mgh Energy Potential = mass * 9.81 (gravity) * height Speed / Velocity is absent from that equation.
Potential energy is unrelated to speed.
An object's potential energy doesn't depend on its speed. You can do anything you like with the object's speed, and it has no effect on potential energy.
Increasing the speed will increase the KINETIC energy, not the potential energy. Of course, the potential energy may eventually be converted into kinetic energy, for example if the object moves upwards.
Potential energy decreases while kinetic energy increases as a car goes down a hill without braking.
This question makes sense in the context of something like a pendulum. At the top of its swing, a pendulum is at maximum height, is not moving and so has zero kinetic energy, and has maximum potential energy since all its energy is potential. As it falls, it gradually moves with increasing speed, so its potential energy is being converted to kinetic energy. At the bottom of the swing, it is moving at maximum speed, and all its energy is kinetic, none is potential, Then it starts to move upwards again, and its kinetic energy is gradually converted back to potential energy.
potential and kinetic energy
Yes, if it is rolling at a constant speed it has potential energy.
The conversion of Potential Energy (the energy something has as a result of its position in a gravity field) into Kinetic energy (the energy of a mass in movement).
It doesn't. Increasing speed affects the KINETIC energy.
The potential (kinetic) energy increases E = (m*v2)/2