Register to reply

Finding Time from Accel and Distance

by BlueBob88
Tags: accel, distance, time
Share this thread:
BlueBob88
#1
Mar27-07, 02:24 PM
P: 1
Not school related, but I guess it could be a homework problem.
I am redoing my racing script on my car game and need some help. I have been looking around in many places and can't seem to find how to do this problem.
1. The problem statement, all variables and given/known data
I need to find the time it takes to travel 0.05 miles at a given acceleration starting at a given speed. I also need to find out the final speed.

So if a car starts from a stop (0 mph) and can travel 0-60mph in 7 seconds. How long will it take to travel 0.05 miles and what will its final speed be.

2. Relevant equations
time = change/acceleration
d=st

3. The attempt at a solution
So far I have its average acceleration at 8.57 mph/s if I can find the time I will be able to find its final speed. If its 1 second it will be 8.75 mph, 2 seconds will be 35mph. (Not to sure on that) But I did (2 seconds^2) * 8.75
Phys.Org News Partner Science news on Phys.org
'Office life' of bacteria may be their weak spot
Lunar explorers will walk at higher speeds than thought
Philips introduces BlueTouch, PulseRelief control for pain relief
Feldoh
#2
Mar27-07, 02:57 PM
P: 1,345
Is it going to be a constant acceleration? If it is you can use

[tex](V_f)^2=(V_i)^2+2a(d_f)[/tex]

Where [tex]V_f =[/tex] Final Velocity, [tex]V_i =[/tex] Initial Velocity, [tex]d_f =[/tex] the final displacement.

From there you can find the time it takes in a multitude of ways.


Register to reply

Related Discussions
Finding the distance, once you have acceleration and time Introductory Physics Homework 10
Finding Time, Distance, and Velocity Introductory Physics Homework 27
Finding angular speed/accel from tangential speed Introductory Physics Homework 0
Finding Distance Traveled Introductory Physics Homework 5
Distance-time Graph and Velocity-time Graphs Introductory Physics Homework 5