In the following equations, the distance x is in meters, the time tin seconds. and the velocity v is in meters per second. whatare the SI units of the constants c1 andc2?
a. x = c1 +c2t
b. x = .5c1t^2
c. v^2 = 2c1x
d. x = c1cosc2t
e. v^2 =2c1v-(c2x)^2
I don't know how to figure this out. Help would be soonice

Another question.

an iron nucleus has a radius of 5.4 X 10^ -15 meters and a mass of9.3 X 10^-26 kg. a) what is its mass per unit volume inkg/m^3?
b) if earth has the same mass per unit volume, what would be itsradius? mass of the earth is 5.98 X 10^24kg.

If anyone can help I would sooo appreciate it! you would be alifesaver! thanks!

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 

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Answerigneous bedrock of the oceanic crust;