Suppose an object slides down a frictionless ramp, tilted $20$ degrees away from horizontal. The ramp is $8$ meters long. How fast is the object going at the bottom, assuming it started from rest at the top?

A$.5\mathrm{.}2$ meters per second

B$.7\mathrm{.}3$ meters per second

C$.12\mathrm{.}5$ meters per second

$=(1-0)(9\mathrm{.}8)sin20$

D$.26\mathrm{.}8$ meters per second

$2.$ Considering the object in question $1$ : how long does it take to slide down the ramp?

A$.0\mathrm{.}9$ seconds

B$.1\mathrm{.}3$ seconds

C$.2\mathrm{.}2$ seconds

D$.4\mathrm{.}4$ seconds