Why don’t skateboarders keep flying through the air when they launch off a ramp

In order for the bug to fly through the air a force has to push the bug forward. identify this force. how does the bug produce

Suppose a diode consists of a cylindrical cathode with a radius of 6.200×10^−2 cm , mounted coaxially within a cylindrical anode with a radius of 0.5580 cm . the potential difference between the anode and cathode is 260 v . an electron leaves the surface of the cathode with zero initial speed (v initial=0). find its speed vfinal when it strikes the anode.

3. which is not a primary color of light? blue red green yellow