A low-frills patio or deck is pretty cheap. Everyone's definition of cheap is different, but decks can be had for as low as $1,000, according to Jessica Piha, a spokeswoman for Porch.com, a website that helps homeowners find the right contractor. But the average deck costs $8,300, Piha says. And how much is a cheap patio? The cost to install a 200-square-foot concrete patio is about $740 to $840 on average, according to HomeWyse.com, an online reference for home projects. But here's why you probably won't buy a cheap patio. If you're pining over someone's patio, you presumably don't want a concrete slab.
The acceleration due to gravity on the surface of the Moon. The mass of the Moon is 7.35 x 10^22 kg and the average radius of the Moon is 1.74 x 10^6 m. Plugging into the formula, we have: g = (6.67 x 10^-11 N-m^2/kg^2)(7.35 x 10^22 kg )/(1.74 x 10^6 m)^2 = (4.9 x 10^12 )/(3.03 x 10^12) = 1.6 m/s^2.
Gravitational forces cause the Earth to pull on the Moon, and the Moon to pull on the Earth (Earth is about 81 times as massive). Since the Moon is travelling with sufficient â¦ velocity, it does not fall into the Earth, but rather orbits around the Earth.The mutual attractive force between the Earth and Moon, due to gravity, keeps the two bodies in a state of mutual revolution.ince the Moon is travelling with sufficient â¦ velocity, it does not fall into the Earth, but rather orbits around the Earth. The mutual attractive force between the Earth and Moon, due to gravity, keeps the two bodies in a state of mutual revolution.