Question

22 (a) An object is thrown vertically upwards and rises to a height of 10 m. Calculate : (i) the velocity with which the object was thrown upward and (ii) the time taken by the object to reach the highest point.

Answer 1

u=√(2gh). from v^2- u^2=2gh & v=o at peak velocity becomes

u=14m/s

t=u÷g
t=1.427 sec