Exactly $2\mathrm{.}7s$ after a projectile is fired into the air from the ground, it is observed to have

a velocity vec$(v)=(8\mathrm{.}4$hat$(i)+5\mathrm{.}0$hat$(j))\frac{m}{s},$ where the $x$ axis is horizontal and the $y$ axis is

positive upward.

Determine the horizontal range of the projectile.

Express your answer using two significant figures.

$R=$

$m$

Part B

Determine its maximum height above the ground.

Express your answer using two significant figures.

$y_{\text{m}\text{a}\text{x}}=$

$m$

Part C

Determine the speed of motion just before the projectile strikes the ground.

Express your answer using two significant figures.

$v_{\text{f}\text{i}\text{n}\text{a}\text{l}}=$

$\frac{m}{s}$

Part D

Determine the angle of motion just before the projectile strikes the ground.

Express your answer using two significant figures.