9. Saagar gives a certain teacher some sass followed by an eye roll. Suddenly, a chankla is thrown at him. The flip-flop moves from rest to 12km/hr when it strikes Saagar in the back
of the head. The flight of the chankla takes only 1.2 seconds. What is the average
acceleration of the chankla?

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.