An airplane is in level flight at an altitude of 0.50 km and a speed of 150 km/h. at
what distance d should it release a heavy bomb to hit the target x? take g = 10 m/s2

First we should find out how much time it takes.

This means the time it takes to fall those 500 meters. It starts at speed 0 vertically. 500=10t22500=10t22 so t=10 seconds.

Now the speed of 150 km/h should be expressed in meters per second. Divide that by 3.6. 150/3.6=41.66... or about 41.67. Now take this tenfold, you get 416.67. Rounding to 2 significant figures instead of 5 gives 420. Which I thought would be cool to mention.

Neptune is the eighth planet from the sun. it was the first planet to get its existence predicted by  mathematical calculations  before it was actually seen through a telescope on sept. 23, 1846. irregularities in the orbit of  uranus  led french astronomer alexis bouvard to suggest that the gravitational pull from another celestial body might be responsible. german astronomer johann galle then relied on subsequent calculations to   spot neptune via telescope. previously, astronomer galileo galilei sketched the planet, but he mistook it for a star due to its slow motion. in accordance with all the other planets seen in the sky, this new world was given a name from greek and roman mythology — neptune, the roman god of the sea.