Sign up now
to enroll in courses, follow best educators, interact with the community and track your progress.
Download
Force and Laws of Motion : Part1 (in Hindi)
6,688 plays

More
Physical Quantities and it's types, Speed, Velocity, Acceleration

Sanyam Mehta
I am an IT professional cum teacher/trainer BTech ITIL certified Allow me to share my knowledge with you. Concentration and hardwork are t

U
Unacademy user
Hi!am new here on the app but I watched your videos on YouTube.i have a problem to ask please help me with it.consider orthorhombic unit cell of cell.consider a=450pm,b=650pm,c=400pm,the parallel distance between the (110) plane is?
Noorul Huda
7 months ago
There is direct formula for this, it's given by 1/d²=h²/a² + k²/b² + l²/c²
Noorul Huda
7 months ago
There is direct formula for this, it's given by 1/d²=h²/a² + k²/b² + l²/c²
Noorul Huda
7 months ago
Use this to find out d, it's direct question
Jasmine Rankawat
7 months ago
Ya I know the formula but when I solved it I wasn't able to come to an answer the answer given is 370.37.
Noorul Huda
7 months ago
OK i'll try to solve
RK
Sir please Hindi me BHI samjhaiye
Mehta sir please decrease language complexity
Ay
sir up board hindi me hai
Mi
aap blackboard par padhaiye pleased
KG
sir please give video of motion chapter also
  1. Sanyam Mehta IT Professional Private Sector 10 Years of Teaching Topic Of Discussion: Science : Force & laws of Motion (Part 1)


  2. Important Terminologies to understand Physical Quantity: A physical quantity is any physical property of a body that can be quantified i.e that can be measured in numbers Eg. mass is measured in terms of Kg:s Types of Physical Quantities Depending upon if a physical quantity has direction or not these are divided into 1. Scalar Quantities: Scalar quantities only have value & no direction. Eg. Temperature of a body is 100 degree celsius 2. Vector Quantities : Vector quantities do have values (magnitude) along with direction Eg. Velocity of a body in North direction is 100 metres per second


  3. Important Terminologies to understand Speed: Speed is the distance travelled by a body per unit time Eg. A person is travelling to his college riding the bike with a speed of 50 kms/hour i.e his bike will cover 50 kms(distance travelled) in 1 hour (time) Velocity: Velocity is the distance travelled by a body per unit time in a particular direction Eg. A boy travelled in North direction 10 kms in 10 hours then his velocity will be 10 km-1km /hour in North direction 10 hours


  4. Important Terminologies to understand Acceleration : Vector quantity , denoted by (a), SI unit - m/sec sq 1. Acceleration is the term used when velocity of an object changes 2. It is measured as rate of change of velocity in unit time Eg.When a boy started (initially the boy was at rest) running from starting point attains a velocity of 1.5 metres (distance) in 10s 1 second (time) then acceleration gained(as the speed is increased from zero) by the boy final velocity (v) - Initial Velocity (u)-rate of change of vel Time taken time a 1.5 metres per secs/10 secs 0.15 metres per secs sq


  5. Thank You Students From Unacademy