Problem $7$: $(6\%$ of Assignment Value$)$

A $66\mathrm{.}4$ kg skier with an initial speed of $14\mathrm{.}2\frac{m}{s}$ coasts up a $2\mathrm{.}50$ m high rise, as shown in the figure.

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Find her final speed right at the top, in meters per second, given that the coefficient of kinetic friction between her skis and the snow is $0\mathrm{.}31.$

$v_f=$

$\frac{m}{s}$

$$

$cos()$

$tan()$

$$

$($

$(1$

$7$

$8$

$9$

HOME

$cotan()$

a $)$

$)$

E

$1^{{?}^{?}}$

$4$

$5$

$6$

atan$()$

acotan$()$

$sinh()$

$$

$1$

$*$

$1$

$2$

$3$

$$

$cosh()$

$tanh()$

$cotanh()$

$0$

$$

$+$

$-$

Grade Summary

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$1$