Posts

Motion

Image
  Chapter -2 Motion SHORT ANSWER TYPE 1. Comment on the statement 'rest and motion are relative terms. Give an example. Ans- The statement "rest and motion are relative terms" means that whether an object is at rest or in motion depends on the observer. A body at rest with respect to one body , may be at the same in motion with respect to other object. Example: Consider a passenger sitting inside a moving train:- The passenger is at rest with respect to train because he is not changing their position relative to the train.  The passenger is in motion with respect to train because the train is moving relative to the ground, and hence the passenger is also moving with it. 2. Fill in the blanks using one of the words: at rest, in motion. (a) A person walking in a compartment of a stationary train is rest relative to the compartment and is rest relative to the platform  (b) A person sitting in a compartment of a moving train is rest relative to the other person si...

Ch 1- Physical quantities and measurement

Image
  Rainbow 🌈 Mind Map Density Definition  - Mass per unit volume. ● Formula - Density = Mass÷ Volume ● Factors - 1. directly proportional to Mass                  2. Inversely proportional to volume ● Units - S.I - kg/ m³             C.G.S- g/cm³ ●  of water at 4 ⁰ C , 1 g/ cm³ = 1000 kg/ m³ ● Regular bodies  - mass is found out using balance and volume by using formula ● Irregular bodies - mass is found out using balance and volume by water displacement method  Rainbow 🌈 Mind Map Speed Definition  - Distance covered per unit time. ●  Formula - Speed = Distance ÷ Time ●  Units -  S.I - m/ s             C.G.S- cm/s ● Relations -   1 m/s = 100 cm/s                       1 m/s = 18 / 5 km/h = 3.6 km/ h                     ...

Ch 3- Energy

 Ch - Energy  Notebook Work  1. Mindmap Work- link 2.   L ink Energy 3. Mindmap of K.E 4. Mindmap of P.E