1. A car is traveling 30 m/s and approaches 10 m from an intersection when the driver sees a pedestrian and slams on his brakes and decelerates at a constant rate of 50 m/s. a) How long does it take the car to come to a stop? b) How far does the car travel before coming to a stop? Does the driver brake in time to avoid the pedestrian?

College Physics
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ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:Paul Peter Urone, Roger Hinrichs
Chapter1: Introduction: The Nature Of Science And Physics
Section: Chapter Questions
Problem 2PE: A car is traveling at a speed of 33 m/s. (a) What is its speed in kilometers per hour? (b) Is it...
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solve the two problem pls
1. A car is traveling 30 m/s and approaches 10 m from an intersection when the driver sees
a pedestrian and slams on his brakes and decelerates at a constant rate of 50 m/s².
a) How long does it take the car to come to a stop?
b) How far does the car travel before coming to a stop? Does the driver brake in time to
avoid the pedestrian?
2. You are standing on the science building 46.0 m high above the ground. Your classmate,
1.8 m tall, is walking alongside the building at a constant speed of 1.20 m/s. If you wish
to drop an egg onto his head,
a) where should he be when you release the egg? Assume that the egg is in free fall.
b) what will be the velocity of the egg when it hits his head?
Transcribed Image Text:1. A car is traveling 30 m/s and approaches 10 m from an intersection when the driver sees a pedestrian and slams on his brakes and decelerates at a constant rate of 50 m/s². a) How long does it take the car to come to a stop? b) How far does the car travel before coming to a stop? Does the driver brake in time to avoid the pedestrian? 2. You are standing on the science building 46.0 m high above the ground. Your classmate, 1.8 m tall, is walking alongside the building at a constant speed of 1.20 m/s. If you wish to drop an egg onto his head, a) where should he be when you release the egg? Assume that the egg is in free fall. b) what will be the velocity of the egg when it hits his head?
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