Question

answer me all questions​

Answer 1

${v }^{2} - {u}^{2} = 2gs \\ v = 0for \: max \: ht \: reahed{finalvelocity} \\ \\ 2 \times 10 \times s = {20}^{2} \\ s = 20 \times 20 \div 20 = 20m$