Whos from k12 in 8th grade and knows the science teacher mrs. rensch reply plz or private chat me

Work out sian speed for the first 30 minutes of her journey. give your answer in km/h.

(a) assume the equation x = at^3 + bt describes the motion of a particular object, with x having the dimension of length and t having the dimension of time. determine the dimensions of the constants a and b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.) (b) determine the dimensions of the derivative dx/dt = 3at^2 + b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.)

Which two particles are found in the center of an atom