Part A Mary and Sally are in a foot race (see the figure). When Mary is 22 m from the finish line, she has a speed of 4.0 m/s and is 5.0 m behind Sally, who has a speed of 5.0 m/s. Sally thinks she has an easy win and so, during the remaining portion of the race, decelerates at a constant rate of 0.34 m/s to the finish line (Figure 1) What constant acceleration does Mary now need during the remaining portion of the race, if she wishes to cross the finish line side-by-side with Sally? Express your answer to two significant figures and include the appropriate units. HA a = Value Units Figure < 1 of 1 > Submit Request Answer Provide Feedback Next > Mary Sally 4.0 m/s 5.0 m/s 5.0 m -22 m

Part A Mary and Sally are in a foot race (see the figure). When Mary is 22 m from the finish line, she has a speed of 4.0 m/s and is 5.0 m behind Sally, who has a speed of 5.0 m/s. Sally thinks she has an easy win and so, during the remaining portion of the race, decelerates at a constant rate of 0.34 m/s to the finish line (Figure 1) What constant acceleration does Mary now need during the remaining portion of the race, if she wishes to cross the finish line side-by-side with Sally? Express your answer to two significant figures and include the appropriate units. HA a = Value Units Figure < 1 of 1 > Submit Request Answer Provide Feedback Next > Mary Sally 4.0 m/s 5.0 m/s 5.0 m -22 m

Name: Part AMary and Sally are in a foot race (see the figure). WhenMary is
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Description: Part AMary and Sally are in a foot race (see the figure). WhenMary is 22 m from the finish line, she has a speed of4.0 m/s and is 5.0 m behind Sally, who has a speed of5.0 m/s. Sally thinks she has an easy win and so, duringthe remaining portion of

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.

Topic Video

Question

Part A
Mary and Sally are in a foot race (see the figure). When
Mary is 22 m from the finish line, she has a speed of
4.0 m/s and is 5.0 m behind Sally, who has a speed of
5.0 m/s. Sally thinks she has an easy win and so, during
the remaining portion of the race, decelerates at a constant
rate of 0.34 m/s to the finish line.
(Figure 1)
What constant acceleration does Mary now need during the remaining portion of the race, if she wishes to cross the finish line
side-by-side with Sally?
Express your answer to two significant figures and include the appropriate units.
HA
a =
Value
Units
Figure
< 1 of 1 >
Submit
Request Answer
Provide Feedback
Next >
Mary
Sally
4.0 m/s
5.0 m/s
5.0 m
-22 m

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