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September 17, 2014

September 17, 2014

Posted by **Tom** on Saturday, July 28, 2012 at 11:18am.

Questions

,what is the rate of decelleration?,

At what yard marker does it decellate to 35 mph

For each 5 feet higher from start - how much farther does it travel.

Thank you for your help,

Tom

- Math/physics -
**Henry**, Sunday, July 29, 2012 at 9:58pm1h = 3600 s.

Vo=60mi/3600s * 1600m/mi = 26.7 m/s. = Initial velocity.

d = 70yd * 3Ft/yd * 1m/3.3Ft = 63.6 m =

Distance traveled.

V = 35mi/3600s * 1600m/mi = 15.6 m/s. =

Final velocity.

1. a = (V^2-Vo^2)/2d

a = (243.4-711.1) / 127.2 = -3.68 m/s^2.

The neg. sign means deceleration.

2. Yard Marker = Yo + 70yds When traveling North or East.

Yard Marker = Yo - 70yds When traveling

South or West.

Yo = Yard marker at starting point.

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