Question

hel riva rive The distances in m) above the ground for a projectile fired vertically upward with a velocity of 42 m/s as a function of time t (in s) is given by s = 42-4.912. Find t for v = 0. tia blic con rive t= seconds (Type an integer or decimal rounded to one decimal place as needed.) riva fini itiv

I got to ds/dt=9.8t+42 and am unsure of what to do next

Answer 1

Am Initial vel, Vi = 42 m/s is & songs Final vel after time t Vit - 49 distance, S = t 42-9.80 = Vigt U= ds dt As for 0-0, ta? 0 = 42 9.8 t 9.2857 t? 42 9.8 t = 4.2857 seci