A motorist makes a trip of 180 km. For the first 90 km she drives at a constant speed of 30kph. At what constant speed must she drive the remaining distance if her average speed for the entire trip is to be 40 kph? (A) 50 kph (B) 60 kph (C) 70 kph (D) 80 kph
A motorist makes a trip of 180 km. For the first 90 km she drives at a constant speed of 30kph. At what constant speed must she drive the remaining distance if her average speed for the entire trip is to be 40 kph? (A) 50 kph (B) 60 kph (C) 70 kph (D) 80 kph
Chapter1: The Study Of Motion
Section: Chapter Questions
Problem 14P: . A long-distance runner has an average speed of 4 m/s during a race. How far does the runner travel...
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