Question

Define the following terms
A- retardation or negative acceleration
B- linear momentum
C- inertia
D- power
E- Kinetic and potential energy​

Answer 1

Retardation is nothing but a negative acceleration. The velocity of the body may either increase or decrease. The change in velocity is known as acceleration. If the velocity of the body increases, acceleration is said to be positive

A -ANS

Power is defined as the ability to act or have influence over others. ... Power means to supply with energy or force. An example of power is to start up an engine.

D-ANS

Conservation of momentum, general law of physics according to which the quantity called momentum that characterizes motion never changes in an isolated collection of objects; that is, the total momentum of a system remains constant.

B-ANS

.

the physical force that keeps things where they are or keeps them moving in the direction they are travelling.

C-ANS

energy which a body possesses by virtue of being in motion.

"energy above that needed to ionize the molecule is carried away as kinetic energy of the electron ejected" Ans kinetic energy

physics, potential energy is the energy held by an object because of its position relative to other objects, stresses within itself, its electric charge, or other factors.Ans POTENTIAL ENERGY

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Answer 2

Answer:

A- When the velocity decreases with respect to time it is termed as retardation or deceleration

In reality negative acceleration is commonly called retardation .

B- Linear momentum is defined as the product of a system’s mass multiplied by its velocity:

p = mv

C- a property of matter by which it remains at rest or in uniform motion in the same straight line unless acted upon by some external force.

D- When work is done on an object, energy is transferred. The rate at which this energy is transferred is called power . So the more powerful a device is, the more energy it will transfer each second.

E- Kinetic energy is energy possessed by an object in motion. The earth revolving around the sun, you walking down the street, and molecules moving in space all have kinetic energy. Kinetic energy is directly proportional to the mass of the object and to the square of its velocity: K.E. = 1/2 m v2.

Potential energy is energy that an object has because of its position relative to other objects. It is called potential because it has the potential to be converted into other forms of energy, such as kinetic energy.

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