Initial Velocity of a falling object

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The discussion centers around the kinematic equations of motion for a falling object, particularly how to incorporate initial velocity into the calculations. Participants clarify the equation y = y_0 + v_0 t - (1/2)gt^2, explaining that time (t) is a continuous parameter that reflects the object's position over time. A specific example is presented where a ball is thrown upwards from a height, prompting questions about calculating height after a set time and total time until it hits the ground. The conversation also touches on the equal and opposite forces experienced during a collision, reinforcing Newton's third law of motion. Overall, the thread emphasizes understanding motion equations and the principles of force in collisions.
  • #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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