Force an Motion

Distance travelled and displacement

Force and Motion

• 
  Principle of conservation of energy
  
  Look at the picture….
  -The total energy in a system always remains the same.
  -Energy is concerved when it changes from one form to other forms energy.
  

Force and Motion

Impulse and impulsive force

Look at the picture….
A boy feels pain when kicking a stone as compared to kicking a ball at the same speed.The impulsive force experienced by the boy is greater because the time of collition is shorter.

waves

A wave is a disturbance that propagates (travels) through space and time, usually by transference of energy. A mechanical wave is a wave that propagates through a medium due to restoring forces produced upon its deformation. For example, sound waves propagate via air molecules slamming into their neighbors, which push their neighbors into their neighbors (and so on); when air molecules collide with their neighbors, they also bounce away from them (restoring force). This keeps the molecules from actually traveling with the wave.
Waves travel and transfer energy from one point to another, often with no permanent displacement of the particles of the medium—that is, with little or no associated mass transport. They consist instead of oscillations or vibrations around almost fixed locations. Imagine a cork on rippling water, it would bob up and down staying in about the same place while the wave itself moves outward. When we say that a wave carries energy but not mass, we are referring to the fact that even as a wave travels outward from the center (carrying energy of motion), the medium itself does not flow with it.
There are also waves capable of traveling through a vacuum, e.g. electromagnetic radiation (including visible light, ultraviolet radiation, infrared radiation, gamma rays, X-rays, and radio waves). They consist of period oscillations in electrical and magnetic properties that grow, reach a peak, and diminish to zero in a periodic fashion.

Relationship between mass and inertia

Look at the picture….

ØIt is more difficult to start motion or to stop motion of an object with bigger mass.

ØBigger mass possesses bigger inertia and vice versa.

Look at the picture….

When the tablecloth is pulled swiftly and horizontally from under the tableware,the tableware remainson top of the table.The inertia of the cup and the plate maintains them in their original position when the tablecloth is bein pulled from under them.

Inertia

Inertia is the property of matter that causes it to resist any change in its motion or state of rest

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