Curvilinear Motion and Projectile Motion

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Flashcards covering curvilinear motion, projectile motion, and related kinematic concepts.

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10 Terms

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Curvilinear Motion

Motion that occurs when a particle moves along a curved path, often in 2 or 3 dimensions.

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Position Vector (r)

Used to determine the position of a particle, s(t), in curvilinear motion. Both its magnitude and direction are time-dependent.

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Displacement (Δr)

The change in a particle's position during a time interval dt, represented as a vector: Δr = r' - r.

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Average Velocity (v_avg)

During the time Δt, the average velocity of the particle can be determined as: v_avg = Δr/Δt

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Instantaneous Acceleration (a)

The time-derivative of velocity, representing the rate of change in velocity of a particle: a = lim (Δt→0) Δv/Δt = dv/dt = d²r/dt²

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Projectile

Any body that is given an initial velocity and then follows a path determined by the effects of gravitational acceleration and air resistance.

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Trajectory

The path followed by a projectile.

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Horizontal Motion of a Projectile

A uniform motion that is not affected by the vertical motion.

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Vertical Motion of a Projectile

Affected by gravity (g), and its acceleration is constant.

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Constant Acceleration Equations (Rectilinear)

v = v₀ + act, s = s₀ + v₀t + (1/2)act², v² = v₀² + 2a_c(s - s₀)