# Determine the rate of deceleration of $7.0 \;kg$ block sliding up an incline angled at $35^{\circ}$ to the horizontal. Assume that the coefficient of friction is $0.45$
$\begin{array}{1 1}-9.2\;m/s^2\\6.7\;m/s^2\\7.5 \;m/s^2\\10\;m/s^2\end{array}$