- #1
beginner16
- 51
- 0
hello
I just started learning physics and already am stuck
Train starts moving with constant acceleration a . In five minutes it travels 5 kilometers . Find a !
S = a * t^2 / 2
a = 2 * S / t^2
My question is why does this formula work only if we express time in seconds ?
If I don't convert 5 minutes into seconds prior to putting variable t into formula , the result is wrong .
Why not correct when t is expressed in minutes , and wrong when expressed in seconds ?
When deriving that formula , I found nothing nothing in it that was specific only for seconds
thank you
I just started learning physics and already am stuck
Train starts moving with constant acceleration a . In five minutes it travels 5 kilometers . Find a !
S = a * t^2 / 2
a = 2 * S / t^2
My question is why does this formula work only if we express time in seconds ?
If I don't convert 5 minutes into seconds prior to putting variable t into formula , the result is wrong .
Why not correct when t is expressed in minutes , and wrong when expressed in seconds ?
When deriving that formula , I found nothing nothing in it that was specific only for seconds
thank you