A. Mass
b. Car's Kinetic Energy
c. Kinetic energy is the energy an object has due to its motion. The kinetic energy of an object is calculated from the velocity and the mass of the object.
Answer: Electric current
Explanation :
The direction of the magnetic field produced by an electric current will change when the direction of the electric current changes.
For example :
If a current is flowing in a straight length of wire, the magnetic field is described by a concentric circle (using right-hand rule).
Let the field lines are in the clockwise direction and when the direction of current is reversed then the direction of the magnetic field is in anticlockwise direction.
Answer:
No
Explanation:
The reason is when you exert the force onto any objects that stay stationary you will get a motion as the kinetic energy.
it cannot be the potential energy unless it was put at any point of heights.
Qualitative, you don't have an actual numerical value but are making a conclusion based on observation.