Two bodies \( A \) and \( B \) have masses \( 20 \mathrm{~kg} \) and \( 5 \mathrm{~kg} \) respec...

Two bodies \( A \) and \( B \) have masses \( 20 \mathrm{~kg} \) and \( 5 \mathrm{~kg} \) respectively. Each one is acted upon by a force of \( 4 \mathrm{~kg} w \). If they acquire the same kinetic energy in times \( t_{A} \) and \( t_{B} \), then the ratio \( \frac{t_{A}}{t_{B}} \) is
(a) \( 1 / 2 \)
(c) \( 2 / 5 \)
(d) \( 5 / 6 \)
(e) \( 1 / 5 \)