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Maths-

General

Easy

Question

Specialists can determine the speed a vehicle was travelling from the length of its skid marks, d,mand coefficient of friction, f. The formula for calculating the speed, s, is s = 15.9 √df. Rewritethe formula to solve for the length of the skid marks

hint Hint:

Rearrange the equation and solve for d.

The correct answer is: not stretchy rightwards double arrow d equals fraction numerator s squared over denominator 252.81 f end fraction

Complete step by step solution:
Here we have the formula for speed s = $15.9 square root of d f end root$
Where, s is the speed, f is the coefficient of friction and d is the length of its skid
marks.
Now on squaring both the sides, we have $s squared equals 252.81 d f$
. $not stretchy rightwards double arrow d equals fraction numerator s squared over denominator 252.81 f end fraction$

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