Vector Quantity: magnitude + direction (जैसे displacement, velocity)
Distance and Displacement
Distance: Total Path Length (Always positive)
Displacement: Shortest path between initial and final position (Can be positive, negative, or zero)
Distance और Displacement के विभिन्न उदाहरण और उनके फॉर्मूले बताएं:
(D = final - initial)
Speed and Velocity
Speed: Distance/Time (Scalar quantity)
Velocity: Displacement/Time (Vector quantity)
Average Speed: Total Distance / Total Time
Average Velocity: ((V + U)/2)
Acceleration
Acceleration: Change in Velocity/Time
Positive Acceleration: Speed बढ़ना
Negative Acceleration (Retardation): Speed कम होना
Formula: (A = (V - U) / T)
Equations of Motion
(V = U + A imes T)
(S = U imes T + \frac{1}{2}A imes T^{2})
(V^{2} = U^{2} + 2AS)
Free Fall
Acceleration due to gravity = (9.8 \text{ m/s}^{2}) (approximately taken as 10)
Important points about free fall and its effects on speed and displacement.
Graphical Representation
Distance-Time Graph
Straight line = constant speed
Curved line = changing speed
Area under the graph represents distance traveled.
Velocity-Time Graph
Straight line = constant acceleration
Area under the graph gives displacement.
Example Problems
Numerical problems based on motion concepts, speed, velocity, and acceleration.
Summary
Motion is relative and can be described using various physical quantities. Understanding concepts thoroughly will help in solving numerical problems and physics concepts in further studies.