Constants | Periodic Table Part A In the winter sport of bobsledding, athletes p

Question

Constants | Periodic Table Part A In the winter sport of bobsledding, athletes push their sled along a horizontal ice surface and then hop on the sled as it starts to careen down the steeply sloped track. In one event, the sled reaches a top speed of 9.2 m/s before starting down the initial part of the track, which is sloped downward at an angle of 8.0 What is the sled's speed after it has traveled the first 80 m? Express your answer with the appropriate units. Value Units 83 Submit Request Answer

Explanation / Answer

Here ,

initial speed , u = 9.2 m/s

let the final speed is vf

acceleration , a = g * sin(theta)

a = 9.8 * sin(8 degree)

a = 1.36 m/s^2

Using third equation of motion

vf^2 - u^2 = 2 * a * d

vf^2 - 9.2^2 = 2 * 1.36 * 80

solving for vf

vf = 17.4 m/s

the sled's speed after it has traveled the first 80 m is 17.4 m/s

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