Motion

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Total distance = 300 + 300 = 600 km Total time = 4 + 5 = 9 hours Average speed = Total distance ÷ Total time = 600 ÷ 9 = 66.67 km/h Note: Average velocity = 0 (since displacement is zero)

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Due to inertia - the tendency of objects to resist change in motion. When the bus accelerates forward, passengers' bodies tend to remain at rest due to inertia, causing them to lean backward relative

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Distance is the total path length traveled (scalar). Displacement is the shortest distance between initial and final positions with direction (vector). Example: If you walk 50m east, then 30m west: Di

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At maximum height, final velocity v = 0 Using v = u + at: 0 = 20 + (-10)t -20 = -10t t = 2 seconds The stone takes 2 seconds to reach maximum height.

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Uniform motion: Velocity remains constant (equal distances covered in equal time intervals). Distance-time graph is a straight line. Non-uniform motion: Velocity changes (unequal distances in equal ti

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The stone moves in a straight line along the tangent to the circle at the point of release. This demonstrates that: 1. Velocity direction is tangent to the curved path 2. Objects in circular motion ha

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Initial velocity u = 0 Final velocity v = 72 km/h = 72 × 5/18 = 20 m/s Time t = 10 s Using v = u + at: 20 = 0 + a × 10 a = 20/10 = 2 m/s² The train's acceleration is 2 m/s²

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Motion depends on the observer's reference frame. The same object can appear moving to one observer and stationary to another. Example: A passenger in a moving train appears stationary to another pass