Use your equation sheet for this one. A car jack is a lever. For every 30 centimeters you push down on the jack, the car is Lifted 2 centimeters. What is the mechanical advantage of the
jack?*

A 60 N
B 15
C 32 N
D 0.067

the answer is lactic acid from anaerobic respiration. the acid in lactic acid is what creates sore and burning muscles. if you think about how acid burns that will give you a clue for questions like this.

if you know your abc's you should be able to get your answer or just use google