- #1
HareJare
- 15
- 2
- Homework Statement
- A girl is running 60m on 8.6 s. What is her biggest velocity, if the acceleration is konstant for the first 15m and then the velocity is constant after that?
- Relevant Equations
- v^2 - v0^2 = 2as
s = v * t
So i know the total time is 8.6 s
t1 + t2 = 8.6s
And from the (v^2 - v0^2 = 2as) i will get that after 15m the velocity which is also the highest velocity
v^2 = 30a
And then after that the velocity will be constant (s = v*t)
45/t2
Now i am stuck here because i have 3 equations but 4 variabels how do i solve this or is this even the right way to think about this problem?
t1 + t2 = 8.6s
And from the (v^2 - v0^2 = 2as) i will get that after 15m the velocity which is also the highest velocity
v^2 = 30a
And then after that the velocity will be constant (s = v*t)
45/t2
Now i am stuck here because i have 3 equations but 4 variabels how do i solve this or is this even the right way to think about this problem?