The formula for force is f = ma, where fis force, mis mass, and a is a
force of 30 Newtons acts upon a 6 kg object,
calculate the acceleration of the object. Include proper units and use the fact that one kilogram meter per second squared is
known in science as one Newton.
5 Newtons
B)
5 meters per second squared
180 Newtons
D)
180 meters per second squar

i'm thinking (a) to keep sand in place; ////////////

explanation: a sand fence or sandbreak, like a snow fence, is used to force windblown, drifting sand to accumulate in a desired place. sand fences are employed to control erosion, sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas.

air enters through the nose, moves through the nasal cavity, the pharynx, the larynx, enters the trachea, moves through the bronchi andbronchioles till the alveoli.

the answer is definitely a