a= ( 3.5 ±0.1) m  ; b= ( 8.7 ±0.2) m  ;      c = ( 1.5 ±0.1) m   Find the value of  D  where, D= 2(a.b)/c

Why does ∆A equals work?

R= 300 m a= 10 m/sec2 X= 5

(ex) You walk at an angle of 65.0° south of east. The size of the y-component of your displacement is 15.0 m. Determine the (a) x-component and (b) magnitude of your displacement. Assume the positive x-direction is east, and the positive y-direction is north. Draw the vector and axes, and as always, show all your work.