Week 5 Fall 2019 Two person race with acceleration and deceleration 14 of 15 IReview | Constants Mary and Sally are in a foot race (see figure (Figure 1)). 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 0.44 m/s2 to the finish line. Part A 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 using two significant figures. View Available Hint(s) ανα ΑΣφ VA D m/s2 а 3 a = Figure 1 of 1 Submit Finish Mary Sally Provide Feedback Next 5.0 m/s 4.0 m/s 5.0 m 22 m

Week 5 Fall 2019 Two person race with acceleration and deceleration 14 of 15 IReview | Constants Mary and Sally are in a foot race (see figure (Figure 1)). 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 0.44 m/s2 to the finish line. Part A 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 using two significant figures. View Available Hint(s) ανα ΑΣφ VA D m/s2 а 3 a = Figure 1 of 1 Submit Finish Mary Sally Provide Feedback Next 5.0 m/s 4.0 m/s 5.0 m 22 m

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)...

See similar textbooks

Related questions

Q: An object is thrown vertically upward from the top of a 350 meter building. Its initial speed is 15…

Q: At 800 m Figure A A bullet is fired vertically upwards with an initial speed of 600 m s-1. Calculate…

A: initial speed = 600 m/sH = 800 m Using equation of motion H = ut - (1/2)(g)(t)2 800 = 600t -…

Q: A bicyclist, initially at rest, speeds up with a uniform acceleration of 4m/s² for 4s. Make a motion…

Q: I need help with 3-4 6 8

A: Hey, since there are multiple questions posted, we will answer first question. If you want any…

Q: What is the difference between average velocity and instantaneous velocity?

Q: A swan on a lake gets airborne by flapping its wings and running on top of the water. If the swan…

A: Given that,Initial velocity : u = 0 (m/sec)Final velocity : v = 6 (m/sec)Acceleration : a = 0.35…

Q: A cab driver heads south with a steady speed of v, = 20.0 m/s for t, = 3.00 min, then makes a right…

A: (a) vector displacement D→=D→1+D2→+D→3=v→1t1+v2→t2+v→3t3=20.0 m/s-j^3.00 min+25.0 m/s-i^2.40…

Q: Question 3 and 4

A: (3)(a) The final velocity at which the object hits the ground is 38.34 m/s(b) It takes 3.912 s for…

Q: 07. At this point, they have 3.4 miles more to go before they reach the finish line. What time will…

Q: Determine the acceleration at s = 2 m if v’ = (2 s) m/s2, where s is in meters. At s = 0, v = 1 m/s.

A: Given: The acceleration (a) given is 2s m/s2. Introduction: The acceleration is defined as the rate…

Q: Linear Motion A car goes from 0 m/s to 80 m/s south in 8 seconds along a flat road. (a) What is the…

Q: QUESTION 3 A juggler throws a bowling pin straight up with an initial speed of 6.7 m/s from an…

A: it’s the policy that we’re supposed to answer one question at a time so i am answering the…

Q: Three particles move along the -axis, each starting at to = 0 s. The graph for A is a…

A: The area under the curve in the velocity-versus-time graph gives the measure of the displacement.The…

Q: The position of an object is given as a function of time by x=7t-3t², where x is in meters and t is…

A: Given Data : The position of the object is given as x = 7t - 3t2.

Q: A fishing boat approaches a caution buoy 100 m ahead at a velocity of 29.5 m/s. The pilot reduces…

Q: RELATIVE MOTION > Example: ➤ In a boat race, boat A is leading boat B by 38m and both boats are…

A: (a) To find the acceleration of boat A, we can use the equation:VA = VA0 + aA * tGiven that VA = 228…

Q: How do I set up?

Q: The Jurassic Park ride at Universal Studios theme park drops 25.6 m straight down essentially from…

A: Given Height ,H = 25.6 m Time the drop takes,T =?? Velocity at the bottom,V =?? Start from rest,…

Q: 4. A bottle dropped from a balloon reaches the ground in 20.0 s. Determine the height of the balloon…

A: Given that, A bottle dropped from a balloon reaches the ground in 20 s. We need to find the height…

Question

Week 5 Fall 2019
Two person race with acceleration and deceleration
14 of 15
IReview | Constants
Mary and Sally are in a foot race (see figure (Figure 1)).
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 0.44 m/s2 to the finish line.
Part A
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 using two significant figures.
View Available Hint(s)
ανα ΑΣφ
VA D
m/s2
а 3
a =
Figure
1 of 1
Submit
Finish
Mary
Sally
Provide Feedback
Next
5.0 m/s
4.0 m/s
5.0 m
22 m

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

Step 2

Step 3

Step 4

Trending now

This is a popular solution!

Step by step

Solved in 4 steps with 3 images

SEE SOLUTION Check out a sample Q&A here

Similar questions

Physics 1 Constant Acceleration 2-Object Problems 1, A truck is stopped at a stoplight. When the light turns green, the truck accelerates at 2.5 m/s². At the same instant, a car passes the truck going a constant speed of 15 m/s. Where and when does the truck catch up with the car? 180m, 12s 2. During a demolition derby, 2 cars are initially facing each other so they willI be moving in opposite directions. The red car accelerates from rest at 3m/s?. The green car, initially moving at 4m/s, accelerates at 1.8 m/s². If they start 100m from each other, where will they collide? 5.68s at 48.4m 3. During a demolition derby, 2 cars are initially facing each other so they will be moving in opposite directions. The red car, initially traveling at 8m/s, increases speed by accelerating at 3m/s2. The green car, initially moving at 4m/s west, decreases speed with an acceleration of 0.4m/s2. If they start 100m from each other, where will they collide? 5.3s at 84.5m A ball is dropped from 50m above…
Short computation The position of an object as a function of time is given by x(t) = bt4 - ct² + et, where b = 7.9 m/s4, c = 9.42 m/s², and e = 6.58 m/s. What is the object's instantaneous acceleration a when t = 0.3 s? a = m/s² 4 Remember to include a "-" if the acceleration turns out to be negative. Do not include a "+" for a positive value. Report your numerical answer below, assuming three significant figures.
None
PAGE 60. HOMEWORK CHAPTER 2 3 Drag racer starts from rest and accelerates over a quarter mile (402 m) strip in 5.80 sec. a) Find the racer's average velocity, in m/s. b) The instantaneous speed at the end of the strip is 250 mph (112 m/s). Find the average acceleration in m/sec².
I| Jenny and Alyssa are members of the cross-country team. On a training run, Jenny starts off and runs at a con- stant 3.8 m/s. Alyssa starts 15 s later and runs at a constant 4.0 m/s. At what time after Jenny's start does Alyssa catch up with Jenny?
Asap plz
Lolliguncula brevis squid use a form of jet propulsion to swim -- they eject water out of jets that can point in different directions, allowing them to change direction quickly. When swimming at a speed of 0.15 m/s or greater, they can accelerate at 1.2 m/s2. Determine the distance the squid has traveled while accelerating.
Problem 6 CyclistA cyclist in a race has a speed v2 and is a distance d behind another cyclist traveling at speed v1. (a)Assuming v2 > v1, sketch a position plot with both cyclists on it. (b) What is the minimum distance thatmust be left in the race (for the cyclist in the front) to be caught? (c) Looking at your answer/expressionfrom the previous part, what happens when v1 = v2? Does this make sense? How do I set up?
Problem 5 Running RaceA running race has a total distance d. The winner runs at a steady speed of v0 and the second placefinisher runs at a speed that is 4/5 of the winner’s speed. (a) How much time passes between each runnerfinishing? (b) The winner didn’t realize they pass the finish line. What is the total distance the winnerhas ran when the second place finisher finishes? (c) Sketch a single position plot with curves for bothrunners on it. Draw a horizontal line to represent the finish. How do I set up?
2. Given the position vs time graph provide the following. Make sure your graph is numerically labeled. ste a. velocity vs time b. acceleration vs time 50 40 30 20- 10- 0- 30 50 Position Time Graph T 100 110 150
1. Isaac can throw a baseball to a maximum height of 28.6 m above the ground. What is the speed of the ball when it hits the ground? m/s What is the total time of flight of the ball if Isaac releases the vertical throw 2.15 m above the ground? s What was the initial velocity of the throw? m/s If Isaac then took a trip to the Moon where 2 the acceleration due to gravity is 1.62 m/s and threw the baseball vertically with the same initial velocity and release point, what would be the maximum height the ball would travel above the Moon's surface?