What is the first velocity of the car with three washers at the 0.25 meter mark? m's Calculate the first and second velocities of the car with tree washers atached to the pulley, using the formulas 01=0.25 m/ts and 02=025 m/(t2-to where 11 and 12 are the average times the car took to reach the 0 25 and tie 050 meter marks. Record these velouses, to wo decimal places in Table E. What is the second velocity of the car with three washers at the 0.50 meter mark? mis​

(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.)