Answer:
the unbalanced force
Explanation:
An unbalance forces are defined as the forces which causes a change in the speed or velocity of a moving object. A force causes a change in the motion of a body and an unbalanced force causes the body to change its velocity and speed or a change in its direction.
An unbalanced force will start movement in a static object or it can cause to speed up the moving object or it can cause to stop the moving object.
Thus an unbalanced force causes the cart to speed up.
Hello There!
-Energy Is The Ability To Do Work-
Energy comes into different forms but they can all be placed in two different categories. These categories are "potential" which means stored energy and energy of position and "kinetic" which is the energy of motion.
POTENTIAL ENERGY <em>Stored energy and the energy of position</em>
CHEMICAL ENERGY <em>Energy in the bonds of atoms and molecules</em>
MECHANICAL ENERGY <em>Energy stored in objects by tension</em>
NUCLEAR ENERGY <em>Energy stored in the nucleus of an atom</em>
GRAVITATIONAL <em>Energy that is stored in an object's height</em>
ELECTRICAL ENERGY <em>Delivered by tiny charged particles called electrons</em>
KINETIC ENERY <em>The energy of motion</em>
THERMAL ENERGY <em>The vibration and movement of atoms and molecules in substances.</em>
RADIANT ENERGY<em> </em><em>Electromagnetic energy that travels in waves</em>
The correct answer is:
sixteen times
In fact, the distance between charge q and the source S is 1 unit. Instead, the distance between charge p and the source S is 4 units. The magnitude of the electrostatic force is inversely proportional to the square of the distance between the charge and the source:

where r is the distance. If we take the force between q and S as reference, we have r=1, so that

while the force between p and S is

Therefore, we see that the force exerted between q and S is 16 times the force exerted between p and S.