Kinematics
Uniform Motion
→ DerivationPosition of a body moving at constant velocity.
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First Equation of Motion
→ DerivationFinal velocity in terms of initial velocity, uniform acceleration, and time.
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Second Equation of Motion
→ DerivationDisplacement in terms of initial velocity, acceleration, and time.
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Average Velocity
→ DerivationDisplacement per unit time over a finite interval.
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Third Equation of Motion
→ DerivationRelates final velocity to initial velocity, acceleration, and displacement.
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Average Acceleration
→ DerivationChange in velocity per unit time over a finite interval.
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Instantaneous Velocity
→ DerivationVelocity at a specific instant — the derivative of position with respect to time.
Class 11Class JEE
Time of Flight
→ DerivationTotal time a projectile remains in the air when launched from and landing on level ground.
Class 11Class JEE
Maximum Height of a Projectile
→ DerivationGreatest vertical height reached by a projectile launched from level ground.
Class 11Class JEE
Instantaneous Acceleration
→ DerivationAcceleration at a specific instant — the derivative of velocity with respect to time.
Class 11Class JEE
Range of a Projectile
→ DerivationHorizontal range on level ground. Maximum range at θ = 45°.
Class 11Class JEE
Velocity Components of a Projectile
→ DerivationHorizontal and vertical velocity components at any time t.
Class 11Class JEE
Speed of Projectile at Any Time
→ DerivationMagnitude of velocity vector at any instant during projectile motion.
Class 11Class JEE
Angle of Velocity at Any Time
→ DerivationDirection of velocity vector with respect to horizontal at any instant.
Class 11Class JEE
Position of Projectile at Any Time
→ DerivationHorizontal and vertical coordinates of a projectile at time t.
Class 11Class JEE
Equation of Trajectory
→ DerivationPath of a projectile — a downward-opening parabola.
Class 11Class JEE
Horizontal Projection — Time of Flight
→ DerivationTime for a horizontally projected body to fall height h.
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Horizontal Projection — Range
→ DerivationHorizontal distance covered by a body projected horizontally from height h.
Class 11Class JEE
Horizontal Projection — Velocity at Any Time
→ DerivationSpeed of a horizontally projected body at time t.
Class 11Class JEE
Horizontal Projection — Trajectory
→ DerivationParabolic path of a horizontally projected body.
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Projection at Angle from Height — Time of Flight
→ DerivationTime of flight when projected at angle θ from height h above ground.
Class 11Class JEE
Projection at Angle from Height — Range
→ DerivationHorizontal range when projected at angle θ from height h.
Class 11Class JEE
Projection at Angle from Height — Trajectory
→ DerivationEquation of path when projected at angle θ from height h.
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Projectile on Inclined Plane — Range Up the Plane
→ DerivationRange along an inclined plane when projected up the slope. α = projection angle from horizontal, β = inclination angle.
Class JEE
Projectile on Inclined Plane — Range Down the Plane
→ DerivationRange along an inclined plane when projected down the slope.
Class JEE
Projectile on Inclined Plane — Maximum Range
→ DerivationMaximum range achievable on an inclined plane of angle β.
Class JEE
Projectile from a Moving Body
→ DerivationVelocity of a projectile launched from a moving body — vector addition of body velocity and launch velocity.
Class 11Class JEE
Effect of Air Resistance on Projectile
→ DerivationAir resistance reduces range, maximum height, and time of flight. Optimal angle shifts below 45°.
Class JEE
Average Speed
Gives the average speed of an object as total distance traveled divided by total time taken.
Magnitude of Resultant Vector
Gives the magnitude of the resultant of two vectors inclined at an angle theta to each other.
Magnitude of Vector Difference
Gives the magnitude of the subtraction vector of two vectors inclined at an angle theta.
Scalar Product of Two Vectors
Gives the dot product of two vectors in terms of their magnitudes and included angle or rectangular components.
Scalar Projection of a Vector
Gives the magnitude of the projection of vector A along the direction of vector B.
Centripetal Acceleration
Gives the radial acceleration directed toward the centre for an object moving in a circle of radius R with speed v.