to a man walking with a velocity of 3km/h due east the wind appears to blow north .but when he increases the speed to 7km/h due east the wind apeears to blow from north east .what is the actual velocity of the wind?
July 23, 2011
Physics II AP
You use the equation Vf^2 = Vi^2 + 2ad to solve for acceleration. Vi = 25; Vf = 0 (because it "slows to rest"). When you do that acceleration should come out to be 5 m/s^2. Now use the F=ma formula and plug in 15N for force and 5 m/s^2 for acceleration. Your mass ...
February 13, 2011