
Marsh Weaver
06/27/2024 · High School
19. The resistance R to the motion of a car is partly constant and party proportional to the square of the speed V . When the speed is \( 30 \mathrm{~km} / \mathrm{hr} \), the resistance is 190 N and when the speed is \( 50 \mathrm{~km} / \mathrm{hr} \), the resistance is 350 N . Find for what speed the resistance is 302.5 ohms. (WAEC)
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The resistance is 302.5 N when the speed is 45 km/hr.
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