A ball of mass 200 g is thrown vertically upward with a velocity of 40 m/s at t = 0 s. At t = 1·0 s, the ratio of its potential energy (P) to its kinetic energy (K), \(\left(\frac{P}{K}\right)\) is (g = 10 m/s2)
1
\(\frac{5}{7}\)
2
\(\frac{6}{7}\)
3
\(\frac{7}{9}\)
4
\(\frac{8}{9}\)