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By Ni'matullah
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Get instant insights and key takeaways from this YouTube video by Ni'matullah.
This summary translates and analyzes the provided Indonesian transcript detailing the solution to a projectile motion problem.
Projectile Motion Analysis (Gerak Parabola)
📌 The problem involves a particle launched from sloping ground with an initial velocity () at an elevation angle () of 37 degrees.
🎯 The target hit is 10 m high ($Y=10$ m) and a horizontal distance of 20 m ($X=20$ m) from the launch point, with gravitational acceleration ($G$) set to 10 m/s².
➡️ The calculation first determines the time of flight ($t$) by relating horizontal distance: .
➡️ Substituting known values, is found to be 25 (since , , so ).
Calculating Initial Velocity ()
📐 The vertical displacement equation is used: , where .
🔢 Substituting $Y=10$, $G=10$, and : .
⏳ By substituting the known value : , simplifying to .
⏱️ Solving for : , resulting in , so the time of flight $t$ is 1 second.
⚡ Finally, is determined using . Since $t=1$ s, equals 25 m/s.
Key Points & Insights
➡️ Projectile Physics Methodology: Successfully solving projectile problems requires decoupling the horizontal motion (constant velocity, ) and vertical motion (constant acceleration, ).
➡️ Trigonometric Values: Key trigonometric values utilized were and for simplification.
➡️ Result Confirmation: The initial launch velocity () required to hit the specified target coordinates is 25 m/s.
📸 Video summarized with SummaryTube.com on Oct 11, 2025, 08:48 UTC
Full video URL: youtube.com/watch?v=SctXHOwQ8Xw
Duration: 6:37
Get instant insights and key takeaways from this YouTube video by Ni'matullah.
This summary translates and analyzes the provided Indonesian transcript detailing the solution to a projectile motion problem.
Projectile Motion Analysis (Gerak Parabola)
📌 The problem involves a particle launched from sloping ground with an initial velocity () at an elevation angle () of 37 degrees.
🎯 The target hit is 10 m high ($Y=10$ m) and a horizontal distance of 20 m ($X=20$ m) from the launch point, with gravitational acceleration ($G$) set to 10 m/s².
➡️ The calculation first determines the time of flight ($t$) by relating horizontal distance: .
➡️ Substituting known values, is found to be 25 (since , , so ).
Calculating Initial Velocity ()
📐 The vertical displacement equation is used: , where .
🔢 Substituting $Y=10$, $G=10$, and : .
⏳ By substituting the known value : , simplifying to .
⏱️ Solving for : , resulting in , so the time of flight $t$ is 1 second.
⚡ Finally, is determined using . Since $t=1$ s, equals 25 m/s.
Key Points & Insights
➡️ Projectile Physics Methodology: Successfully solving projectile problems requires decoupling the horizontal motion (constant velocity, ) and vertical motion (constant acceleration, ).
➡️ Trigonometric Values: Key trigonometric values utilized were and for simplification.
➡️ Result Confirmation: The initial launch velocity () required to hit the specified target coordinates is 25 m/s.
📸 Video summarized with SummaryTube.com on Oct 11, 2025, 08:48 UTC
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