if i want to change a polytecnic is there any requirements for that because i was told that you have to go for it for one year?
A stone is projected vertically upwards from the
ground with a velocity of 25 cm/s. Its height above
the ground aftert second is Sm where 25t – 9.81,2.
After what time is it: (i) 20 m above the ground?
(ii) 40 m above the ground (iii) back to the ground?
(iv) Find the greatest height attained by the stone.?