My Math Forum  

Go Back   My Math Forum > High School Math Forum > Algebra

Algebra Pre-Algebra and Basic Algebra Math Forum


Reply
 
LinkBack Thread Tools Display Modes
July 4th, 2012, 08:45 AM   #1
Newbie
 
Joined: Apr 2012

Posts: 6
Thanks: 0

Speed-time graph

This graph is a speed-time graph for a car accelerating from rest: http://imageshack.us/photo/my-images/82 ... dff54.png/

How long does it take the car to travel half the distance? I'm stuck on this question. How do I work this out? Thank you
xine is offline  
 
July 4th, 2012, 09:30 AM   #2
Senior Member
 
MarkFL's Avatar
 
Joined: Jul 2010
From: St. Augustine, FL., U.S.A.'s oldest city

Posts: 12,211
Thanks: 521

Math Focus: Calculus/ODEs
Re: Speed-time graph

The distance d that the car travels is the area of the triangle under the velocity line:



The acceleration a is the change in velocity with respect to time:

hence:

and so:



If we let be the time to travel half the distance, and be the time to travel the entire distance, then we find:

hence:

MarkFL is offline  
Reply

  My Math Forum > High School Math Forum > Algebra

Tags
graph, speedtime



Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
Pls Help.. Its about SPEED DISTANCE AND TIME. MathsIlove Elementary Math 8 September 4th, 2014 07:28 PM
Average Speed. Accel vs time plot. yogazen2013 Physics 2 September 15th, 2013 02:26 PM
Distance time graph Chikis Physics 5 October 26th, 2012 10:30 PM
Distance, speed and time problem thinkfast Algebra 2 January 21st, 2012 01:19 AM
Speed, Time and distance>? krieve Algebra 1 September 26th, 2008 04:51 AM





Copyright © 2019 My Math Forum. All rights reserved.