4. An auto's velocity increases uniformly from 6.0 m/s to 20 m/s while covering 70 m in a straight
line. Find the acceleration and the time taken

Aman is trying to drag a small tree that he cut down. if the static coefficient of friction of the tree on the ground is 0.5 and the tree weighs 670 n, what is the minimum amount of horizontal force that the man will need to apply so that the tree will start moving? o a. 465 n o b. 230 n o c. 670 n o d. 335 n