Uniform acceleration/ catch up question

AI Thread Summary
The discussion revolves around a physics problem involving uniform acceleration, where Igor is 8.0 meters behind Brian, who accelerates from rest at 2.8 m/s². The key equations for uniform acceleration are referenced, particularly d = (vi)(t) + 1/2(a)(t²), which creates confusion regarding how to incorporate the initial distance between the two runners. Ultimately, the user found the solution by searching for similar discussions on the topic, indicating that the problem can be resolved with the right application of the equations. The exchange highlights the challenges of understanding uniform acceleration and the importance of collaborative problem-solving in physics.
saikisen
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Having trouble getting the formula for this question.

1. During a football games, Igor is 8.0m behind Brian and is running at 7.0m/s when Brian catches the ball and starts to accelerate away at 2.8m/s^2 at rest.
Will Igor catch Brian? If so, after how long?
How far down the field will Brian have run?




2. Involves 5 uniform acceleration equations.



3. d= (vi)(t) + 1/2(a)(t^2)
8.0m +(t)(7.0m/s)=d
8.0 + (t)(7.0m/s)=(vi)(t) + 1/2(a)(t^2)?

Getting the formula is really confusing me. I realize that Igor is 8.0m behind Brian but I get confused at that moment where I must insert that into the equation.
 
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