A $5\mathrm{.}87-$kg object passes through the origin at time

t $=0$

such that its x component of velocity is $4\mathrm{.}95$ m$/$s and its y component of velocity is

$2\mathrm{.}82$ m$/$s$.$

$($a$)$ What is the kinetic energy of the object at this time?

J

$($b$)$ At a later time

t $=2\mathrm{.}00$ s$,$

the particle is located at

x $=8\mathrm{.}50$ m

and

y $=5\mathrm{.}00$ m$.$

What constant force acted on the object during this time interval?

magnitude$$ Ndirection $$ measured from the $+$x axis

$($c$)$ What is the speed of the particle at

t $=2\mathrm{.}00$ s$?$

m$/$s