A man throws a rock at an angle of 45◦ to the horizontal at an initial speed of 25√ 2 ft/s. It leaves his hand 20 ft above the ground. There is a 7 ft tall board 50 ft away. (a) Where is the rock 1 seconds later? (b) How high does the rock go? (c) Does the rock hit the board?

which piece of furniture will have the most inertia and give the furniture movers the most difficulty in moving?  

answer

a 75kg dining table

i believe the answer is a hope it and is correct

in most common fires, oxygen is needed for an oxidation reaction to takes place. the combination of oxygen with any element as fuel can create fire and combustion will occur especially if wood, light materials and other combustible things are combine with oxygen.