Question

I need the solution to this question

Answer 1

hii mate...

u=12m/s
s=-65m
a=-10/sec²
s=ut+1/2at²
-65=12t-5t²
5t²-12t-65=0
5t²+13t-25t-65=0
t(5t+13)-5(5t+13)
(t-5)(5t+13)
time cannot be -ve
therefore, -13/5 terminated
t=5sec

I hope it will help u