Initial Velocity of a falling object

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SUMMARY

The discussion centers on the kinematic equations for a falling object, specifically addressing the inclusion of initial velocity in the equation y = y_0 + v_0 t - (1/2)gt^2. Participants clarify that the time variable (t) represents the duration since the object was thrown, and it remains consistent throughout the equation. The conversation also touches on the application of Newton's third law in collision scenarios, emphasizing that both vehicles exert equal and opposite forces upon impact.

PREREQUISITES
  • Understanding of kinematic equations, specifically y = y_0 + v_0 t - (1/2)gt^2
  • Familiarity with the concept of initial velocity (v_0) in motion equations
  • Knowledge of Newton's third law of motion regarding forces
  • Basic grasp of projectile motion and gravitational acceleration (g)
NEXT STEPS
  • Study the derivation and applications of kinematic equations in physics
  • Explore the implications of initial velocity on projectile motion
  • Learn about the principles of momentum conservation in collisions
  • Investigate real-world applications of Newton's laws in vehicle dynamics
USEFUL FOR

Students of physics, educators teaching mechanics, and anyone interested in understanding motion and forces in real-world scenarios.

  • #31
Did you get my last question?
 
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  • #32
Doc Al said:
When the car hits the wall they exert equal and opposite forces on each other.

That doesn't just apply to walls. Whenever any two things hit each other, they exert equal and opposite forces on each other.

Doc Al - thanks for your patience. I do understand now and I can sleep soundly.
 
  • #33
RENATO said:
What about the truck? Will it hit the Volkswagen with equal opposite reaction?
Of course. If the truck hits the volkswagon, then the volkswagon hits the truck. They exert equal and opposite forces on each other, just like any two things that hit each other.
 
  • #34
Doc Al said:
Of course. If the truck hits the volkswagon, then the volkswagon hits the truck. They exert equal and opposite forces on each other, just like any two things that hit each other.


Thank you so much!
 

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