Question

-25=20t-1/2×10t² where t=5sec​

Answer 1

$-25=20t-\frac{1}{2} 10t^{2}$

$-25=20(5)-\frac{1}{2}10(25)$

$-25=100-5(25)$

$-25=100-125$

$-25=-25$

$==>1$