A ball is thrown vertically upwards and it rises to a height of 5 m. Calculate the velocity with which the ball was thrown upwards and the time taken by the ball to reach the
highest point. (Take g = 10 m/s2
)

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