A bicyclist starts from at an acceleration of (1.2m/s^2) (1.2 meter per second squared).. how far must he travel to reach a speed of 7m/s.(that 7 meters per second..not second squared)..Can you show how to do this, what is needed to know?

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- Sep 10th 2010, 10:53 AMstatman101Elementary Physics question
A bicyclist starts from at an acceleration of (1.2m/s^2) (1.2 meter per second squared).. how far must he travel to reach a speed of 7m/s.(that 7 meters per second..not second squared)..Can you show how to do this, what is needed to know?

- Sep 10th 2010, 10:54 AMAckbeet
How do you handle problems that have a constant acceleration?

- Sep 10th 2010, 11:01 AMe^(i*pi)
From what I can tell you need to know the initial speed of the cyclist

- Sep 10th 2010, 11:01 AMUnknown008
Do you know the definition of acceleration?

Basically, we can say in algebra that:

$\displaystyle a = \frac{v - u}{t}$

That is acceleration (constant) is the rate of change of velocity.

From there, you can derive other formulae that can help you better than others depending on what is given. - Sep 10th 2010, 11:05 AMstatman101
5.83...im confused because the time goes from seconds squared to just seconds

- Sep 10th 2010, 11:06 AMAckbeet
When the acceleration is constant, what does the position function look like?

- Sep 10th 2010, 11:21 AMstatman101
what a waste of time...

- Sep 10th 2010, 11:22 AMAckbeet
Excuse me? What's a waste of time?

- Sep 10th 2010, 11:34 AMUnknown008
So, you rather get away with only the answer with nothing learnt from what you didn't understand?(Wondering)