Posted by anshuman kumar on .
9. A toy is thrown vertically downwards from the top of a building and has an initial velocity of 1.5 m/s. If the height of the building is 25 m, determine
i. the velocity with which the toy hits the ground
ii. the time taken for the toy to fall

eep 
Steve,
h = 25  1.5t  4.9t^2
v = 1.5  9.8t
set h=0 and solve for t
use that t to get the velocity at impact.