Collin is running with an initial velocity of 4 m/s when he accelerates at 2 m/s for 3 seconds What is Collin's final velocity?
A 18 m/s
B 9 m/s
10 m/s
D 12 m/s

Use the de broglie's wave equation to find the wavelength of an electron moving at 7.3 × 106 m/s. show your work. note: h = plank's constant (6.62607 x 10-34 j s)