Ask Experts Questions for FREE Help !
Ask
    WSERRATA's Avatar
    WSERRATA Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Oct 5, 2011, 04:19 PM
    Velocity and displacement
    A cyclist leaves home and rides due east for a distance of 45km. She returns home on the same bike path. If the entire trip takes 4h, what is her average speed? What is her displacement?

    The return trip of the cyclist in quest 13 took 30 min longer than her trip east, although her total time was still 4h. What was her velocity in each direction?
    FadedMaster's Avatar
    FadedMaster Posts: 1,510, Reputation: 148
    Ultra Member
    		  
    #2

    Oct 5, 2011, 06:16 PM
    We only help with homework, we do not provide direct answers. Have you made any attempts on this work? If so, please post what you have tried so far.

    If not, let's start with displacement. Displacement is the shortest distance between your starting point and your ending point and should also show direction.

    So for example, if you start at, say, Point A, and travel 10 meters East, then your displacement is 10 meters East.

    If you start at Point A, travel 10 meters East, then 10 meters North. Your displacement is not 20 meters, and it is not 10 meters. Your displacement is () 14.1 meters North-East.

    This is by use of the Pythagorean theory (). It helps to draw it out.

    So what is the displacement in your question?
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
    Uber Member
    		  
    #3

    Oct 6, 2011, 03:23 AM
    Also, average speed is given by total distance covered divided by the total time taken.

    For the second part of your question, assign a variable to the initial velocity and form equations to solve! Remember
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

Calculate the displacement and the velocity of the boat [ 3 Answers ]

A boat travels 100 km , then 40km , and finally 80 km. The trip takes 6.5 hours

Displacement and velocity [ 1 Answers ]

https://online-s.physics.uiuc.edu/cgi/courses/shell/common/showme.pl?courses/phys100/fall10/preflights/1/graphs.gif For graph (a) and (c), what is the difference when we talk about velocity... such as slowing down or speeding up or moving in positive or negative direction...

Acceleration and displacement [ 4 Answers ]

What distance does an object travel if it accelerates uniformly from rest at a rate of 6m/s/s for 6s? What is the car's displacemtn if the acceleration is directed to the north?

Single displacement [ 1 Answers ]

Um can some one help me do a single displace meant reaction for: • hydrochloric acid + iron Please:confused:

Displacement, Velocity, and Acceleration [ 2 Answers ]

The altitude of a hang glider is increasing at a rate of 6.90 m/s. At the same time, the shadow of the glider moves along the ground at a speed of 14.0 m/s when the sun is directly overhead. Find the magnitude of the glider's velocity in m/s.:(

View more questions Search