HELP PLEASE!! Bill used a first class lever to lift a heavy boulder that requires 200 N of
force to be lifted. He pushed down on one end of the lever with 50 N of
force. This end of the lever went down 0.5 m. This resulted in the boulder
lifting 0.1 m. What was the mechanical advantage of the lever? Please
record the NUMERICAL VALUE only.

Sorry i don’t know what to do

Answertraveling around a circular trackexplanation"traveling around a circular track" is the best answer as you could be traveling around a circular track at a constant speed. your velocity would therefore have the same magnitude but will always be constantly direction. since acceleration is the rate of change of velocity, the rate of change will only involve the direction of velocity and not the magnitude.wrong choices: "an object at rest" does not accelerate at all"increasing speed while traveling around a curve" means that the acceleration will not be constant due to only change in direction; it will be constant due to both magnitude and direction"an object in free fall" does not necessarily change direction 

Shania is trying to determine the oldest geologic unit on this map and the reason to why is she unable to do so is that  the units are all the same age.. when there is the same age, there will be no oldest geologic unit and that i cannot be credible.