- #1

karush

Gold Member

MHB

- 3,269

- 5

which is

**3.00 m**above the point where the puddy leaves your hand.

the initial speed of the putty as it leaves your hand is

**9.70 m/s**

**a.**What is the

*speed*of the puddy just before it strikes the ceiling?

$\begin{align*}\displaystyle

V^2 &= V_0^2 + 2ad \\

&=(9.7)^2 + 2(-9.8)(3)

&= 94.9-58.8\\

&= 36.1\\

V&\approx\color{red}{6 m/s}

\end{align*}$

**b,**How much

*time*from when it leaves your and does it take the puddy to reach the ceiling?

\begin{align*}\displaystyle (6-9.7)/t&=-9.8\\

-3.7t&=-9.8s\\

t&=\frac{-9.8s}{-3.7}\\

t&\approx\color{red}{2.65s}

\end{align*}

OK no bk answer to this but think this is correct

also comment on format/process thanks