Asked by Adiamo Ibrahim

The resistance R to the motion of a car is partly constant and partly varies as the square of the speed V. At 80km/hr the resistance is 1060N and at 120km/hr, its resistance is 1460N. What will be the resistance at 140km/hr
Answered by Tote
R = ks^2+m
1060 = (80*80)k+m
6400k+m = 1060 ........(i)

1460 = (120*120)k+m
14400k+m = 1460 .........(ii)

Solve i and ii simultaneously and get k and m.

At 140km/h,
R = (140*140)k+m
Substitute for k and m and get the resistance at 140km/h

Answered by Omowunmi
My answer is 0
Answered by Michael
The resistance r to the motion of a car is partly constant and partly proportional to the square of the speed v. When the speed is 30km/h, the resistance is 190 newtons and when the speed is 50km/h, the resistance is 350 newtons. Find for what speed the resistance is 302.5 newtons
Answered by Mariam
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Answered by Mariam
A varies darectly as M and N inversely as the square root of V.the relationship between A,M,N,V solution AXMN/V" A=KMN/V"
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