Two 110 kg bumper cars are moving toward each other in opposite directions. car a is moving at 8 m/s and car z at –10 m/s when they collide head–on. if the resulting velocity of car a after the collision is –10 m/s, what is the velocity of car z after the collision?

Explanation:

Mass of bumper cars,

Initial speed of car A,

Initial speed of car Z,

Final speed of car A after the collision,

We need to find the velocity of car Z after the collision. Let it is equal to . Using the conservation of momentum as :

So, the velocity of car Z after the collision is (-12 m/s). Hence, this is the required solution.

-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

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