On Earth all bodies have a weight, or downward force of gravity, proportional to their mass, which Earthâs mass exerts on them. Gravity is measured by the acceleration that it gives to freely falling objects. At Earthâs surface the acceleration of gravity is about 9.8 metres (32 feet) per second per second. Thus, for every second an object is in free fall, its speed increases by about 9.8 metres per second. At the surface of the Moon the acceleration of a freely falling body is about 1.6 metres per second per second.
Physicians and physiologists have warmed to the idea of water walking as therapy and good exercise for people with joint pain and damage for its many benefits, which include: 1  Waterâs buoyancy reduces the impact on joints.  Working out in water can help improve cardiovascular fitness, balance and range of motion.
Walking may help prevent Type 2 diabetes, reduce high blood pressure and improve your mental health. The Department of Cambridge Community Development states walking 1 mile in 20 minutes can burn up to 88 calories in a 150-pound person; 2 miles increases this figure to 176 calories burned.he suggested walking speed for health benefits is 3 miles per hour, according to the University of Medicine & Dentistry of New Jersey. Walking at this pace would take 20 minutes to complete one mile.