PLEASE HELP ME PLEASE! BRAINLEST ​

Under normal temperature and pressure conditions, what type of rock could be formed from weathering in erosion of metamorphic rock

If the force applied to an object remains constant, is more power needed for the object to move faster ? explain

(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.)