A woman drives a car from one city to another with different constant speeds along the trip. She drives at a speed of 70.0 km/h for 20.0 min, 65.0 km/h for 15.0 min, makes a stop for 50.0 min, then continues at 40.0 km/h for 30.0 min, at which point she reaches her destination. (a) What is the total distance between her starting point and destination (in km)? km (b) What is the average speed for the entire trip (in units of km/h)? km/h
A woman drives a car from one city to another with different constant speeds along the trip. She drives at a speed of 70.0 km/h for 20.0 min, 65.0 km/h for 15.0 min, makes a stop for 50.0 min, then continues at 40.0 km/h for 30.0 min, at which point she reaches her destination. (a) What is the total distance between her starting point and destination (in km)? km (b) What is the average speed for the entire trip (in units of km/h)? km/h
Glencoe Physics: Principles and Problems, Student Edition
1st Edition
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Paul W. Zitzewitz
Chapter5: Displacement And Force In Two Dimensions
Section: Chapter Questions
Problem 9STP
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A woman drives a car from one city to another with different constant speeds along the trip. She drives at a speed of 70.0 km/h for 20.0 min, 65.0 km/h for 15.0 min, makes a stop for 50.0 min, then continues at 40.0 km/h for 30.0 min, at which point she reaches her destination.
(a) What is the total distance between her starting point and destination (in km)?
km
(b) What is the average speed for the entire trip (in units of km/h)?
km/h
km
(b) What is the average speed for the entire trip (in units of km/h)?
km/h
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