Class 10 Physics - Motion & Equations of Motion (Concise Sheet)

Key Concepts
- Displacement (s), Velocity (v), Acceleration (a), Time (t)

Equations (constant a)
1) v = u + at
2) s = ut + ½at2
3) v2 = u2 + 2as
4) s = ((u+v)/2)·t

Tips
- Signs matter: direction +/–
- Use (2) when time known, (3) when time unknown.

Solved Numerical (Hint)
Given u=5 m/s, a=2 m/s2, t=3 s → use v = u+at ⇒ v=11 m/s. Then s=ut+½at2 ⇒ s=5·3+0.5·2·9=15+9=24 m.

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Class 10 - Biology: Plant Physiology

Diagrams:
1) Photosynthesis (Leaf Cross-section)
- Labelled parts: cuticle, upper epidermis, palisade mesophyll, spongy mesophyll, vascular bundle (xylem & phloem), stomata, lower epidermis.
- Show direction of light, CO2 entry through stomata, O2 release, and flow of sugars to phloem.

2) Transpiration (Whole Plant)
- Labelled parts: roots, xylem vessels, stem, leaf, stomata.
- Arrows showing water uptake by roots, ascent through xylem, evaporation from mesophyll cell walls, diffusion through stomata.

Tip: Memorize the path: Root hairs → Xylem → Leaf mesophyll → Stomata.

Practice MCQ:
Which of the following increases the rate of transpiration in plants?
A) High humidity
B) Closure of stomata
C) Strong wind
D) Lower temperature

Correct Answer: C) Strong wind

#biology #Class10 #PlantPhysiology #Photosynthesis #Transpiration #MCQ

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