The unit of momentum is the product of the units of mass and
velocity, then the SI unit for momentum is
- m/s.
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The slope of a velocity time graph over any interval of time gives the during that interval

(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.)

Where do magnetic lines of force enter earth?