Using the formula
"v=v_0+a\\cdot t"
We write the speed formulas for each component after 3 seconds
"v_i=v_{0i}+a_i\\cdot t=-3+2\\cdot t=-3+2\\cdot 3=-3+6=3 m\/s"
"v_j=v_{0j}+a_j\\cdot t=1+3\\cdot t=1+3\\cdot 3=1+9=10 m\/s"
Then the velocity modulus is
"v=\\sqrt{v_i^2+v_j^2}=\\sqrt{3^2+10^2}=\\sqrt{9+100}=\\sqrt{109}=10.44m\/s"
Comments
Leave a comment