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)
It's 67/100 because a percent is out of 100 which is already simplified
Assuming the five frame is for the number five (5) then place 5 counters in the frame.