Question $8$

$1$ pts

FFS$8.$ What is the speed of the arrow shot into the air staright upward at $50\frac{m}{s}$ after $6$ seconds? after $7$ seconds?

$-10\frac{m}{s}$ at $6$ sec $.,$ and $-20\frac{m}{s}$ after $7$ seconds. The arrow is falling back down now accelerating towards the ground.

$+10\frac{m}{s}$ at $6$ seconds anc $\frac{m}{s}$ at $7$ seconds.

$0\frac{m}{s}$ at $6$ seconds and $7$ seconds since the arrow stopped moving at $5$ seconds.

$10\frac{m}{s}$ at $6$ sec $.,$ and $20\frac{m}{s}$ after $7$ seconds $.$ The arrow is still rising and speeding up$.$