Momentum $p = mv = 5 \times 4 = 20$ kg·m/s.

Velocity and force are vector quantities (have both magnitude and direction). Speed and temperature are scalar quantities.

$R = \frac{u^2 \sin 2\theta}{g} = \frac{20^2 \times \sin 60°}{10} = \frac{400 \times \frac{\sqrt{3}}{2}}{10} = 20\sqrt{3}$ m.

Power $P = VI = 220 \times 0.5 = 110$ W.

Static friction acts on a body at rest when an external force is applied but motion has not started. It opposes the tendency of motion.