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The leader of a bicycle race is traveling with a constant velocity of +11.1 m/s and is 9.60 m ahead of the second-place
second-place cyclist has a velocity of +9.80 m/s and an acceleration of +1.20 m/s². How much time elapses before he catches the
leader?

User France
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Answer:

We can use the following kinematic equation to solve the problem:

Δx = v1(t) + (1/2)a2t²

where Δx is the initial separation between the two cyclists, v1 is the velocity of the leader, a2 is the acceleration of the second-place cyclist, and t is the time taken for the second-place cyclist to catch up with the leader.

Substituting the given values, we get:

9.60 m = (11.1 m/s)t + (1/2)(1.20 m/s²)t²

Simplifying and rearranging the equation, we get a quadratic equation in t:

0.6t² + 11.1t - 9.60 = 0

We can solve for t using the quadratic formula:

t = [-11.1 ± √(11.1² - 4(0.6)(-9.60))] / (2(0.6))t = [-11.1 ± 12.7] / 1.2

t = 0.91 s or t = -18.43 s

Since time cannot be negative, we can discard the negative solution. Therefore, the time taken for the second-place cyclist to catch up with the leader is:

t = 0.91 s

Hence, it will take 0.91 s for the second-place cyclist to catch up with the leader.

Step-by-step explanation:

User Temu
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