what is the answer for this a car starts from rest at 0.8 meters pre seconds for 10 seconds and contiunes for a further 20 seconds what is the distance travelled

Answer 1

You must have misquoted the question.

It cannot start out rest at 0.8 meters per second. Perhaps you meant that is was at rest and accelerating at 0.8 m/s^2 for ten seconds. Then (I assume) it continutes another 20 seconds without accelerating, at constant velocity of 0.8*10 = 8 m/s.

Add the distances that it travels while accelerating and while the velocity is constant.