https://www.khanacademy.org/science/ncert-class-9-science/x7e8d66f732d28ce4:in-in-motion/x7e8d66f732d28ce4:in-in-distance-and-displacement/v/worked-example-distance-and-displacement-from-graphs 2025-06-11T09:41:52.046979843Z Worked example: Distance and Displacement from graphs Let's solve a question! Skyloom (Dubbing) video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Worked example: Distance and Displacement from graphs Let's solve a question! https://cdn.kastatic.org/ka-youtube-converted/vVZvDY6R0l8.mp4/vVZvDY6R0l8.mp4 487 Motion https://www.khanacademy.org/science/in-in-class-11-physics-cbse-hindi/in-in-11-motion-in-a-straight-line-hindi/distance-displacement-and-coordinate-systems-hindi/e/yj-physics-exercise-1 2024-08-28T11:57:50.039372168Z Distance and displacement from graphs Practice calculating distance traveled and displacement from position vs. time graphs. Yuki exercise https://www.khanacademy.org/science/in-in-class9th-physics-india/in-in-motion/in-in-distance-and-displacement/e/distance-and-displacement-properties 2026-04-08T00:36:09.500768563Z Distance and displacement - properties Let's solve some problems to understand distance and displacement deeply and correct common misconceptions. Aakash Bagga exercise https://www.khanacademy.org/science/revision-term-1-ka-science-grade-9/x07cce91f26fedd3c:week-3/x07cce91f26fedd3c:motion/v/calculating-average-velocity-or-speed-dubv 2025-05-29T08:44:44.739717086Z Calculating average velocity or speed Although speed and velocity are often words used interchangeably, in physics, they are distinct concepts. Velocity (v) is a vector quantity that measures displacement (or change in position, Δs) over the change in time (Δt), represented by the equation v = Δs/Δt. Speed (or rate, r) is a scalar quantity that measures the distance traveled (d) over the change in time (Δt), represented by the equation r = d/Δt. Dubverse video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Calculating average velocity or speed Although speed and velocity are often words used interchangeably, in physics, they are distinct concepts. Velocity (v) is a vector quantity that measures displacement (or change in position, Δs) over the change in time (Δt), represented by the equation v = Δs/Δt. Speed (or rate, r) is a scalar quantity that measures the distance traveled (d) over the change in time (Δt), represented by the equation r = d/Δt. https://cdn.kastatic.org/ka-youtube-converted/7cigQbJbUrU.mp4/7cigQbJbUrU.mp4 705 Motion https://www.khanacademy.org/science/in-in-class-11-physics-cbse-hindi/in-in-11-motion-in-a-straight-line-hindi/average-velocity-and-average-speed-hindi/e/practice--velocity---speed--without-graphs- 2026-03-06T03:50:42.250138425Z Average velocity and speed in one direction: word problems Practice calculating average velocity and speed from word problems when an object moves in one direction. Sean Boston exercise https://www.khanacademy.org/science/in-in-class-11-physics-cbse-hindi/in-in-11-motion-in-a-straight-line-hindi/average-velocity-and-average-speed-hindi/e/average-velocity---speed-multi-motion--no-graph- 2026-03-06T17:50:38.494926415Z Average velocity and speed with direction changes: word problems Practice calculating average velocity and speed from word problems when an object changes directions. Sean Boston exercise https://www.khanacademy.org/science/bmc-grade-9-science/x345505a97fc4a662:laws-of-motion/x345505a97fc4a662:accelearation/v/airbus-a380-take-off-time-dubv 2025-05-29T08:44:44.739717086Z Airbus A380 take-off time Let's figure out how long it takes an A380 to take off given a constant acceleration. Explore the physics of an Airbus A380 take-off with Khan Academy. Learn how to calculate the time it takes for the aircraft to reach takeoff velocity using principles of acceleration and velocity. This practical example brings the concepts of speed, time, and acceleration to life. Dubverse video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Airbus A380 take-off time Let's figure out how long it takes an A380 to take off given a constant acceleration. Explore the physics of an Airbus A380 take-off with Khan Academy. Learn how to calculate the time it takes for the aircraft to reach takeoff velocity using principles of acceleration and velocity. This practical example brings the concepts of speed, time, and acceleration to life. https://cdn.kastatic.org/ka-youtube-converted/MK7iQA5mCI4.mp4/MK7iQA5mCI4.mp4 488 Motion https://www.khanacademy.org/science/in-in-class-11-physics-cbse-hindi/in-in-11-motion-in-a-straight-line-hindi/acceleration-hindi/e/acceleration-and-velocity-exercise 2025-02-01T10:58:49.272005043Z Acceleration and velocity Practice using the acceleration equation to solve for acceleration, time, and initial or final velocity.  Yuki exercise https://www.khanacademy.org/science/in-in-class11th-physics/in-in-class11th-physics-motion-in-a-straight-line/in-in-acceleration-tutorial/e/direction-of-acceleration-and-velocity 2026-03-07T06:30:45.782093816Z Direction of acceleration and velocity in 1D Let's solve some problems to better understand how the direction of acceleration and velocity determine a body's motion. Aakash Bagga exercise https://www.khanacademy.org/science/in-in-class11th-physics/in-in-class11th-physics-motion-in-a-straight-line/in-in-motion-in-a-straight-line-velocity-and-speed-from-graphs/e/average-velocity-and-average-speed-exercise 2026-04-08T08:09:55.69362548Z Average velocity and average speed from graphs Practice finding average velocity or average speed from a position vs. time graph Yuki exercise https://www.khanacademy.org/science/in-in-class9th-physics-india/in-in-motion/in-in-position-time-graphs/v/calc-velocity-from-position-time-graphs 2020-06-23T07:22:41Z Calc. velocity from position time graphs Let's learn how to calculate velocities from position-time graphs. We will also get some intuition behind why slope or steepness of position time graphs represent velocity. Mahesh Shenoy video https://cdn.kastatic.org/googleusercontent/K7jWjPMLDSNmfBZuRWPIksZsAD0OmSelNQHSx8aOP1WCur091H0rxY5-HhKpAeMptHtx94mIitF7i7p_l-MZ9fOC Calc. velocity from position time graphs Let's learn how to calculate velocities from position-time graphs. We will also get some intuition behind why slope or steepness of position time graphs represent velocity. https://cdn.kastatic.org/ka-youtube-converted/7kHOA0o9TzQ.mp4/7kHOA0o9TzQ.mp4 569 Motion https://www.khanacademy.org/science/in-in-class9th-physics-india/in-in-motion/in-in-velocity-time-graphs/v/calculating-displacement-from-v-t-graphs 2020-06-23T07:22:42Z Calculating displacement from v-t graphs Let's learn how to calculate displacements from v-t graphs. We will see why the area under the v-t graph gives displacement. Mahesh Shenoy video https://cdn.kastatic.org/googleusercontent/SGJ17XEWTx5U56nQtEdQtaceI3vUU1RMpui6d4mijjMAtX3Ri3cNgzxrzzrq__kEhOlSbq2X2BAFmjds4sGeVqyN Calculating displacement from v-t graphs Let's learn how to calculate displacements from v-t graphs. We will see why the area under the v-t graph gives displacement. https://cdn.kastatic.org/ka-youtube-converted/E-uhIncJmKM.mp4/E-uhIncJmKM.mp4 652 Motion https://www.khanacademy.org/science/in-in-class9th-physics-india/in-in-motion/in-in-deriving-equations-of-motion/v/deriving-3-equations-of-motion-from-v-t-graph 2020-06-23T07:22:40Z Deriving 3 equations of motion (from v-t graph) Let's derive the three equations of motion using a velocity time graph v = u + at s = ut + 1/2 at^2 v^2 = u^2+2as. Mahesh Shenoy video https://cdn.kastatic.org/googleusercontent/p-QROu6jZeWhHdUYqrMF3P1WDAFgjjjPifAAgXp1qJ8OyYaugKtKjGQ2nxqRNLnoBei1gVE-cxZeobwYKn4GM8BKWQ Deriving 3 equations of motion (from v-t graph) Let's derive the three equations of motion using a velocity time graph v = u + at s = ut + 1/2 at^2 v^2 = u^2+2as. https://cdn.kastatic.org/ka-youtube-converted/AMhBEPaF7xo.mp4/AMhBEPaF7xo.mp4 785 Motion https://www.khanacademy.org/science/revision-term-1-ka-science-grade-9/x07cce91f26fedd3c:week-3/x07cce91f26fedd3c:motion/v/-inn-kinematic-equations 2025-06-10T19:08:38.887445217Z Choosing Kinematic equations Let's understand which kinematics equations to choose! Skyloom (Dubbing) video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Choosing Kinematic equations Let's understand which kinematics equations to choose! https://cdn.kastatic.org/ka-youtube-converted/znSqsTAxQLk.mp4/znSqsTAxQLk.mp4 559 Motion https://www.khanacademy.org/science/ap-college-physics-1/xf557a762645cccc5:kinematics/xf557a762645cccc5:visual-models-of-motion/e/v-t-area-displacement 2025-11-10T17:40:46.606305245Z Finding displacement from velocity graphs Practice finding displacement from velocity vs. time graphs. Sean Boston exercise https://www.khanacademy.org/science/in-in-class11th-physics/in-in-class11th-physics-motion-in-a-straight-line/in-in-class11th-physics-motion-in-a-straight-line-kinematic-formulas/e/1d-kinematics-ap1-conceptual 2025-02-01T10:58:49.272005043Z Choosing the best kinematic equation Practice choosing the best kinematic equation to solve one-dimensional motion word problems.  April Russell exercise https://www.khanacademy.org/science/in-in-class9th-physics-india/in-in-motion/in-in-problem-solving-using-kinematic-equations/v/using-equations-of-motion-2-steps-numerical 2020-06-23T07:22:43Z Using equations of motion (2 steps numerical) Let's solve some numerical on uniformly accelerated motion, which requires more than one step. Here we will use the equations of motion (kinematic equations) 2 times to find the required quantity. Mahesh Shenoy video https://cdn.kastatic.org/googleusercontent/OT3xJNrrTYmIQE9cAZjHrWyEtHoVzbes0zQ2W2LCpSqsNP-YapW0yL5Ko3LrVXyslr5VGb7I_pTsz2TaBz7u4izT Using equations of motion (2 steps numerical) Let's solve some numerical on uniformly accelerated motion, which requires more than one step. Here we will use the equations of motion (kinematic equations) 2 times to find the required quantity. https://cdn.kastatic.org/ka-youtube-converted/G6_Yz9bdC2s.mp4/G6_Yz9bdC2s.mp4 844 Motion https://www.khanacademy.org/science/in-in-class11th-physics/in-in-class11th-physics-motion-in-a-straight-line/in-in-class11th-physics-motion-in-a-straight-line-kinematic-formulas/e/1d-kinematics-exercises-ap1-numerical 2026-03-10T05:00:40.135420241Z Kinematic equations: calculations Practice calculating acceleration, velocity, displacement, and time from word problems using kinematic equations exercise https://www.khanacademy.org/science/in-in-class9th-physics-india/in-in-motion/in-in-uniform-circular-motion/v/calc-speed-time-in-a-uniform-circular-motion-solved-numerical 2020-06-23T07:22:40Z Calc. speed & time in a uniform circular motion - Solved numerical Let's solve 2 numerical on uniform circular motion. Mahesh Shenoy video https://cdn.kastatic.org/googleusercontent/ardAUICc3zUJCc3lTOm1d08VDOYPD_n3emsVyNO-hEi8VbcCzmxSAkVndVX8O0Uya_1MaykOJy_JGQOoYNeO4Gcxtw Calc. speed & time in a uniform circular motion - Solved numerical Let's solve 2 numerical on uniform circular motion. https://cdn.kastatic.org/ka-youtube-converted/kZ8RqqvM_Dc.mp4/kZ8RqqvM_Dc.mp4 463 Motion