Question

a body projected vertically up from the top of atower with 19.6m/s takes 5s to reach the ground .find the height of the tower

Answer 1

Answer:

25.8 meter

Explanation:

body will continue for 2 sec upward after 2sec

1. u=0 and hight coverd is 19.2m
2. use h=ut+1/2at²
3. now we have 3 more sec left
4. again use formula in point 2 and calculate total hight by putting the value t=3
5. you will get 45 m
6. now minus the height coverd in 1st point ... you will get the answer