Mechanics - SUVAT Equations
See [[Physics - SUVAT Equations]]A, it’s largely the same.
If you have two cars which decelerate the same amount ($a$) over the same distance ($s$), which SUVAT equation can you use?
\[v^2 = u^2 + 2as\]
Two cars, $A$ and $B$, have a $100ms^{-1}$ and $80ms^{-1}$ velocity respectively. Car $B$ reaches a final velocity of $0ms^{-1}$. Car $A$ reaches a final velocity of $x\, ms^{-1}$. They decelerate the same amount ($a$) over the same distance ($s$). What two SUVAT equations can you come up with?
\[0^2 = 80^2 + 2as\]
\[x^2 = 100^2 + 2as\]
2021-02-23
What is $9.8\times2$?
\[19.6\]
What is $9.8\div2$?
\[4.9\]
2022-02-17
You are told that 
It seems like there’s one equation with two unknowns. How can you find $k$?
It seems like there’s one equation with two unknowns. How can you find $k$?Use the fact that the velocity at $k$ must be equal for both curves.