A = k/R where A = acceleration and R = radius of the turn and k is a constant to be found.
Substituting the given values:-
10 = k / 70
k = 10*70 = 700
So the equation of the motion is A = 700 / R
When the radius is 140 the acceleration is 700 / 140 = 5 ft/sec/sec ( answer)
Each of the angles in a triangle are 60 degrees, so when you add them together, you get 180
60+60+60=180
Six now have a good day happy face bye-bye