3.7 - Conclusion
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Practice Questions
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What is the resultant velocity if a boat travels at 15 m/s north and 20 m/s east?
💡 Hint: Use Pythagorean theorem: vR = √(v1² + v2²).
Break down a 50 m/s velocity at 60° into its components.
💡 Hint: Use v_x = v cos(θ) and v_y = v sin(θ).
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Interactive Quizzes
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What method do we use to find the resultant of two perpendicular velocities?
💡 Hint: Think of how we calculate the hypotenuse in a right triangle.
True or False: Resolution of a velocity vector helps in understanding projectile motion.
💡 Hint: Consider the motion of projectiles.
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Challenge Problems
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An athlete runs 100 m/s at 30° north of east. Resolve this into components and find the resultant velocity if it also runs at 20 m/s west.
💡 Hint: First resolve into components before adding vectors.
A rocket is launched at 150 m/s at an angle of 45°. Calculate the time of flight if g = 9.81 m/s².
💡 Hint: Use vertical velocity to find time of flight.
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