An athlete swims the length L of a pool in a time t, and makes the return trip to the starting position in a time tz. If she is swimming initially in the positive x-direction, determine her average velocities symbolically for the following. (Assume that time t, is from the other end of the pool to the starting point. Use any variable or symbol stated above as necessary. Do not substitute numerical values; use variables only. Indicate the direction with the sign of your answer.) (a) the first half of the swim Vavg (b) the second half of the swim Vavg = (c) the round trip Vavg (d) What is her average speed for the round trip? average speed :

An athlete swims the length L of a pool in a time t, and makes the return trip to the starting position in a time tz. If she is swimming initially in the positive x-direction, determine her average velocities symbolically for the following. (Assume that time t, is from the other end of the pool to the starting point. Use any variable or symbol stated above as necessary. Do not substitute numerical values; use variables only. Indicate the direction with the sign of your answer.) (a) the first half of the swim Vavg (b) the second half of the swim Vavg = (c) the round trip Vavg (d) What is her average speed for the round trip? average speed :

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter2: Motion In One Dimension

Section: Chapter Questions

Problem 24P: In the particle under constant acceleration model, we identify the variables and parameters vxi,...

See similar textbooks

Similar questions

An athlete swims the length L of a pool in a time t1 and makes the return trip to the starting position in a time t2. If she is swimming initially in the positive x-direction, determine her average velocities symbolically for the following. (Assume that time t2 is from the other end of the pool to the starting point. Use any variable or symbol stated above as necessary. Do not substitute numerical values; use variables only. Indicate the direction with the sign of your answer.) (a) the first half of the swimvavg = (b) the second half of the swimvavg = (c) the round tripvavg = (d) What is her average speed for the round trip?average speed =
Speedy Sue, driving at 30 m/s, enters a one-lane tunnel. She then observes a slow-moving van150 m ahead traveling with speed 1.0 m/s (because it has engine trouble). Sue applies her brakesimmediately and decelerates at 3.0 m/s 2 to come to a stop (a) Determine the distance between Sue's car and the van as a function of time t, with t=0when Sue enters the tunnel,(b) Determine the closest distance that Sue’s car came to the van.
Suppose the caravan of 10 cars begins immediately in front of the first toll booth, travels 20 km to a second toll booth, then another 40 km to a third toll booth, and finally stops immediately after the third tool booth. Thus, they travel a total of 60 km. What is the total end-to-end delay? Where is the last car in the caravan after one hour? Your answer must include a distance/specific location, and not only a relative direction.
A car traveling at 60 ft/sec begins decelerating (time is zero here, as is position) at a constant 10 feet per second squared. How many feet does the car travel before coming to a complete stop? Yet another hint: is the acceleration positive or negative? Then, determine the velocity function by integrating the acceleration function, and solving for C (the fixed point will be the velocity of the car at t=0). Integrate the velocity function to determine the position function, and solve for C (the fixed point will be the position when t=0 - and I gave that info above). One more thing...to find how long it will take to stop (which you will need in order to determine how many feet it takes to stop) you will need to use the velocity function and solve for t when v(t)=0.
When given a particle’s position along the x-axis is described by the function x(t) = A t + B t2, where t is in seconds, x is in meters, and the constants A and B are given below. By given the variables belowA = -3.6 m/sB = 3.5 m/s2 What would the expressions be, in terms of A, B, and t for the velocity of the particle as a function of time??My solution at first was 3.6 * 7.0 t.
The displacement of a raccoon is measured to be ∆x = 2.13 m ± 0.19 m, and this displacement is measured to have occurred over a time period of ∆t = 6.16 s ± 0.10 s. If the raccoon’s average velocity were computed using these inputs, what would be the relative error of the average velocity? Assume fully uncorrelated errors, and use the error propagation procedure discussed in lecture. Round your answer to 3 digits past the decimal point, like "0.XYZ"
Suppose s1t2 is the position of an object moving along a line at time t Ú 0. Describe a process for finding the instantaneous velocity at t = a.
A person drove a car in a straight line, cutting 8.4 km at a time of 0.12 h, then he ran out of fuel and left the car and walked in the same straight line to the nearest gas station, and he cut 2 km in a time of 0.5h and then returned again in a time of 0.6 h, calculate the average speed For the movement? A) From its inception until reaching the gas station b) from its inception until his return to the car again
While running a marathon, a long-distance runner uses a stopwatch to time herself over a distance of 100 m. She finds that she runs this distance in 18 s. Answer the following by considering ratios, without computing her velocity. a. If she maintains her speed, how much time will it take her to run the next 400 m?
Which of the following is the correct conversion of initial velocity in base SI units? Refer to the problem given below. Lamborghini Murcielago is one of the most iconic cars ever as it was featured as a Batmobile in the third installment of Batman Trilogy directed by Christopher Nolan. If it can go from 0 to 60 miles per hour in 3 seconds, what is its rate of change in velocity per unit time? (1 mile is equal to 1.61 kilometers)
An athlete swims the length L of a pool in a time t1 andmakes the return trip to the starting position in a time t2. Ifshe is swimming initially in the positive x - direction, determineher average velocities symbolically in (a) the first halfof the swim, (b) the second half of the swim, and (c) theround trip. (d) What is her average speed for the roundtrip?
The acceleration of a particle as a function of time is given as a= kt, where, a is linear acceleration in m/s2, k is proportionality constant in m/s3 and t is time inseconds. At countdown time t= 0 second, the velocity of a particle v=3 m/s. Knowing the condition that both the velocity and position are zero at countdown time t=5 seconds; write down the final general equations of motion of the particle as a function of time.