Answer:C. 9.1m
Explanation:
Good luck!
friction
weight
gravity
while taking a turn on a track, the track provides the frictional force acting towards the center of the curve. we know that to move in a curve, centripetal force is required. here since the frictional force acts towards the center, it provides the necessary centripetal force to move in circle. hence the correct choice is
friction
It's actually Friction.
I just did the test and got it right.