Question

Un mobil, miscandu-se cu acceleratia a=2,0 m/s^2 a parcurs distanta d=100 m in timpul t=5,0 s. Care a fost viteza initiala?

Answer 1

$d=v_0t+ \frac{at^2}{2}$

$v_o= \frac{2d-at^2}{2t}$

$v_0= \frac{200-50}{10} =15m/s$