Abody moves along a straight line, its distance from the origin at any instant being given by the equation x = 8t − 3t2, where x is in centimeters and t is in seconds.

(a) find the average velocity of the body in the interval from t = 0 to t = 1 sec, and in the interval from t = 0 to t = 4 sec.
(b) find the expression for the average velocity in the interval from t to t + δt.
(c) what is the limiting value of this expression as δt approaches zero?
(d) find the time or times at which the body is at rest.
(e) find the expression for the acceleration at any time.

Brades exam guidelines exam instructions billing & payments & support question 6 of 20 : select the best answer for the question use this illustration to answer the question below. forms & resources al programs 9 ww linics 6. in the circuit shown in the figure above, suppose that the value of r, is 100k, and the value of r2 is 470 kq. at which of the following locations in the circuit would you measure the highest voltage with your meter? rvices 999999 a. between points b and c b. between points a and b c. between points b and e d. between points a and c eredu mark for review (will be highlighted on the review page) mend < < previous question next question

What component of earth’s atmosphere exists entirely as a result of photosynthesis?

Calculate the first and second velocities of the car with four washers attached to the pulley, using the formulas v1 = 0.25 m / t1 , and v2 = 0.25 m / (t2 – t1) where t1 and t2 are the average times the car took to reach the 0.25 and the 0.50 meter marks. record these velocities, to two decimal places, in table e.