SOLUTION: The power, P(watts) of a car engine is proportional to the square of its speed, s(m/s). When s=15, P=2100 . Work out the speed (to 1 DP) when the power is 2200 watts

Algebra ->  Proportions  -> Lessons -> SOLUTION: The power, P(watts) of a car engine is proportional to the square of its speed, s(m/s). When s=15, P=2100 . Work out the speed (to 1 DP) when the power is 2200 watts      Log On


   

Question 1174221: The power, P(watts) of a car engine is proportional to the square of its speed, s(m/s).
When s=15, P=2100
.
Work out the speed (to 1 DP) when the power is
2200 watts
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
P=ks%5E2-------------The first sentence.

The next data gives you the information to find the constant, k.
Use that to answer the question.