Ch 08 - Measurement of Time and Motion7th Science
Linear Motion
What is the fundamental definition of 'Linear Motion' in kinematics?
What is the fundamental definition of 'Linear Motion' in kinematics?
Linear Motion is the straightforward movement of an object strictly along a straight line.
- In this type of motion, the direction of movement does not bend or curve at any point.
- Examples: An apple falling straight down from a branch under the influence of gravity, or a sprinter running in a perfectly straight 100m lane.
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Linear means moving in a straight Line.
Definition of Speed
How is the physical quantity of 'Speed' officially defined in kinematics?
How is the physical quantity of 'Speed' officially defined in kinematics?
Speed is strictly defined as the total distance covered by an object in a unit of time.
- Significance: It serves as a standard scalar metric to mathematically compare how fast or slow different objects are moving (e.g., calculating exactly how many meters an object travels in 1 second, or kilometers in 1 hour).
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Uniform Linear Motion
Under what two strict mathematical conditions is a moving object said to be exhibiting 'Uniform Linear Motion'?
Under what two strict mathematical conditions is a moving object said to be exhibiting 'Uniform Linear Motion'?
- Straight Path: The object must be moving continuously along a perfectly straight line.
- Constant Speed: The speed must not fluctuate; mathematically, the object must cover equal distances in equal intervals of time.
- Example: A spacecraft coasting through deep space without accelerating, braking, or altering its trajectory.
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Also in this chapter
25 more cards to study in Prism
- 4Non-Uniform Linear Motion
- 5The D-S-T Magic Triangle
- 6Standard Units of Speed
- 7Speed Unit Conversion: km/h to m/s
- 8Dashboard Instruments: Speedometer vs. Odometer
- 9SI Convention Rules for Time Units
- 10Fractional Time: Milliseconds vs. Microseconds
- 11Average Speed Formula
- 12Natural Astronomical Timekeepers
- 13Distance Formula
- 14The Samrat Yantra Sundial
- 15Time Formula
- 16Ancient Indian Timekeeping Scholars
- 17Fluid Dynamics of Ancient Water Clocks
- 18Ghatika-yantra: The Sinking Bowl Clock
- 19Combustion and Sand Clocks
- 20Galileo and the Pendulum Clock
- 21Components of a Simple Pendulum
- 22Oscillatory vs. Periodic Motion
- 23Defining One Complete Oscillation
- 24Time Period of a Pendulum
- 25Factors Affecting the Time Period
- 26Gravity and Pendulum Time Period
- 27Modern Precision Clocks
- 28Distance-Time Graphs
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