the magic of mental math

14×13 don't go through the rigour of trying to multiply this . there's a simpler way
14+3=17
17x10=170
4×3=12
170+12=182
14×13=182

#BRINGBACKOURGIRLS#

Newton second law of motion

Newton's second law of motion states that the rate of change of momentum of a body is directly proportional to the applied force and the motion of the change must take place in the same direction of the force.
Mathematically,
F=K(mv-mu)/t where K is the constant of proportionality and it is enperimetaly proven to be 1
mu = initial momentum
mv=final momentum
⇒ F=( mv-mu)/t  by factorization,
F= m( v-u)/t  but v-u/t = a
⇒ F = ma

Viva mathematica!

Mathematics is an independent,organised and reasoning discipline. It is the only field of study that Can correctly express and explain the world and the universe...... Viva mathematica!!!

Newton's Third Law of Motion

It was Sir Isaac Newton who propounded in his third law of motion that to every action there is always an equal but opposite reaction....that is to say action and reaction are equal but opposite. Literarily 'it applies to the of sowing and reaping.You reap the consequence of what you sow.

The actual velocity of a body in motion and the actual position of a body at rest cannot be determine with100% accuracy------Uncertainty Principle!

Doppler effect in sound

Doppler effect is the change in frequency or pitch of a source of Sound when there is a relative motion between the source and the observer.Doppler effect occur in both sound and light waves.For example, if an ambulance with a siren just passes an observer,a sudden drop in pitch is heard.on the other hand, when a train blowing its horn is approaching an observer the pitch of the horn heightens.