Mr. Vera is a superhero and can leap a building in a single bound. If Mr. Vera's vertical leap is 351 meters, then what is his take off speed?

I don't know your answer but this might help you understand

Explanation:

The kangaroo jumps up with an initial velocity that we'll have to find and then reaches some maximum height d that we are given and then returns back down and when the kangaroo just reaches the ground, it has a velocity downwards of equal magnitude to its velocity upwards just opposite direction. So we'll say that final velocity is the negative of the initial velocity for the kangaroo. But first of all, let's figure out what this initial velocity is and we'll use this formula and the final velocity at the very top is zero so v top squared equals v initial squared plus 2ad and we'll subtract 2ad from both sides and switch the sides around so we have initial velocity squared equals negative 2ad take the square root of both sides and we have initial velocity is square root of negative 2 times acceleration times the height that it reaches. So that's square root of 2 times negative 2 times negative 9.8 times 1.45 meters height which is an initial launch velocity of 5.331 meters per second. And then we'll use this formula to find the time that it spends in the air knowing that initial velocity is negative of the final velocity and then we'll substitute for final velocity and write negative of initial velocity in its place and then subtract v i from both sides giving us negative 2v i on the left and then switch the sides around and divide by a to solve for t. So t is negative of 2 times initial velocity divided by a so that's negative 2 times 5.331 meters per second divided by negative 9.8 meters per second squared and so the kangaroo spends 1.09 seconds in the air.

-first use of geothermal energy occurred more than 10,000 years ago in north america by american paleo-indians

-the first industrial use of geothermal energy began near pisa, italy in late 18th century

-in 1904, italian scientist piero ginori conti invented the first geothermal electric power plant in which steam was used to generate the power

-with the above experiment, the first geothermal plant in usa started in 1922 with a capacity of 250 kilowatts

-however, in 1946 first ground-source geothermal heat pump installed at commonwealth building in portland, oregon

-during the 1960’s, pacific gas and electric began operation of first large scale geothermal power plant in san francisco, producing 11 megawatts

-in 1973, when oil crisis began many countries began looking for renewable energy sources and by 1980’s geothermal heat pumps (ghp) started gaining popularity in order to reduce heating and cooling costs

-as effect of climate change started showing results, governments of various countries joined hands to fight against it, for which kyoto protocol was signed in japan in 1997, laid out emission targets for rich countries and required that they transfer funds and technology to developing countries, 184 countries have ratified it

hope this