if u solve this i will call u genius
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we can solve in this way
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how do u solve this?
you are great
thanks actually we have ghis chaptee and i got in mind the formula of resistence and tried it.
is my answer correct
thanks actually we have this chapter and i got in mind the formula of resistance and tried it
hey its air resistance
yes
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Kinetic Energy = 1/2 * m * v^2, you don't have to calculate the velocity directly to solve this problem.
The potential energy of an item is: m*g*h
m is mass in kg.
g is the acceleration due to gravity in m/s^2 (e.g. 9.81)
h is the height in meters
This yields 10*9.81*20 = 1962 kg*m^2/sec^2 (aka N*m or joules)
immediately before impact, 100 % of the potential energy has been converted to kinetic energy.
1962 Joules is my final answer......nt sure
The potential energy of an item is: m*g*h
m is mass in kg.
g is the acceleration due to gravity in m/s^2 (e.g. 9.81)
h is the height in meters
This yields 10*9.81*20 = 1962 kg*m^2/sec^2 (aka N*m or joules)
immediately before impact, 100 % of the potential energy has been converted to kinetic energy.
1962 Joules is my final answer......nt sure
it seems pretty good
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