Body dropped from a height of 45 m . If g is $10 \mathrm{~m} / \mathrm{s}^2$; the velocity with whic

Question

Body dropped from a height of 45 m . If g is $10 \mathrm{~m} / \mathrm{s}^2$; the velocity with which it strikes the ground is

Professor PC Thomas Classes · Answer

$v^2 = u^2 + 2gh \implies v^2 = 0 + 2(10)(45) = 900 \implies v = 30 \mathrm{m/s}$.