A train which is traveling at 100 mi/hr applies its brakes as it reaches point A and slows down with a constant deceleration. Its decreeased velocity is boserved to be 60 mi/hr as it passes a point 1/2 mile beyoind A. A car moving at 50 mi/hr passes B at the same instant that the train reaches point A. In an unwise effort to beat the train to the crossing, the driver "steps on the gas" Calculate the constant acceleration a that the car must have in order to beat the train to crossing by 4 sec and find the velocity v of the car as it reaches the crossing. Note: 1 mi = 5280 ft Train 1 mi 100 mi/hr 50 mi/hr B Car 1.3 mi

A train which is traveling at 100 mi/hr applies its brakes as it reaches point A and slows down with a constant deceleration. Its decreeased velocity is boserved to be 60 mi/hr as it passes a point 1/2 mile beyoind A. A car moving at 50 mi/hr passes B at the same instant that the train reaches point A. In an unwise effort to beat the train to the crossing, the driver "steps on the gas" Calculate the constant acceleration a that the car must have in order to beat the train to crossing by 4 sec and find the velocity v of the car as it reaches the crossing. Note: 1 mi = 5280 ft Train 1 mi 100 mi/hr 50 mi/hr B Car 1.3 mi

Name: A train which is traveling at 100 mi/hr applies its brakes as itreach
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Description: A train which is traveling at 100 mi/hr applies its brakes as itreaches point A and slows down with a constant deceleration. Itsdecreeased velocity is boserved to be 60 mi/hr as it passes apoint 1/2 mile beyoind A. A car moving at 50 mi/hr passes B

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Displacement, Velocity and Acceleration

In classical mechanics, kinematics deals with the motion of a particle. It deals only with the position, velocity, acceleration, and displacement of a particle. It has no concern about the source of motion.

Linear Displacement

The term "displacement" refers to when something shifts away from its original "location," and "linear" refers to a straight line. As a result, “Linear Displacement” can be described as the movement of an object in a straight line along a single axis, for example, from side to side or up and down. Non-contact sensors such as LVDTs and other linear location sensors can calculate linear displacement. Non-contact sensors such as LVDTs and other linear location sensors can calculate linear displacement. Linear displacement is usually measured in millimeters or inches and may be positive or negative.

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Question

A train which is traveling at 100 mi/hr applies its brakes as it
reaches point A and slows down with a constant deceleration. Its
decreeased velocity is boserved to be 60 mi/hr as it passes a
point 1/2 mile beyoind A. A car moving at 50 mi/hr passes B at the
same instant that the train reaches point A. In an unwise effort to
beat the train to the crossing, the driver "steps on the gas" Calculate
the constant acceleration a that the car must have in order to beat the
train to crossing by 4 sec and find the velocity v of the car as it
reaches the crossing. Note: 1 mi = 5280 ft
Train
1 mi
100 mi/hr
50 mi/hr
B
Car
1,3 mi

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