An object's velocity is v=2ghv = \sqrt{2gh}v=2gh. If g≈9.8 m/s2g \approx 9.8 \text{ m/s}^2g≈9.8 m/s2 and h=5 mh = 5 \text{ m}h=5 m, what is the velocity?
9.9 m/s9.9 \text{ m/s}9.9 m/s
98 m/s98 \text{ m/s}98 m/s
49 m/s49 \text{ m/s}49 m/s
7 m/s7 \text{ m/s}7 m/s