PHYSICS
NOTES All notes provide in there class 9th to 12th . Own handwriting notes you can download
DIGITAL NOTES
Motion Kya Hai?
Motion ka matlab hai kisi object ka apne position ko time ke saath change karna. Jab koi object move karta hai, toh uski position time ke saath badalti hai.
Types of Motion
1. Rectilinear Motion: Jab object seedhi line mein move karta hai, jaise ek gaadi seedhi sadak par chal rahi ho.
2. Circular Motion: Jab object circle ke path par move karta hai, jaise ek ghoomta hua chakkar.
3. Periodic Motion: Jab object ek fixed interval ke baad apni position ko repeat karta hai, jaise pendulum ka hilna.
Distance aur Displacement
- Distance: Ye total path hai jo object ne move kiya, chahe wo kisi bhi direction mein ho. Iska unit meter (m) hota hai.
- Displacement: Ye straight line distance hai starting point se ending point tak, aur ye direction ko bhi consider karta hai.
Speed aur Velocity
- Speed: Ye distance travelled per unit time hai. Iska formula hai:
Iska unit bhi meter per second (m/s) hota hai.
- Velocity: Ye displacement per unit time hai, aur ye direction ko bhi include karta hai. Iska formula hai:
Acceleration
Acceleration ka matlab hai velocity ka change per unit time. Agar velocity badh rahi hai toh acceleration positive hoga, aur agar kam ho raha hai toh negative (deceleration) hoga. Iska formula hai:
Graphs of Motion
Motion ko samajhne ke liye graphs ka use bhi hota hai:
1. Distance-Time Graph: Is graph se hum object ki speed samajh sakte hain. Agar graph straight line hai, toh speed constant hai. Agar slope badh raha hai, toh speed badh rahi hai.
2. Velocity-Time Graph: Is graph se hum acceleration samajh sakte hain. Agar graph straight line hai, toh acceleration constant hai. thanx