GPE = mgh (for objects close to earth where g can be considered to be constant) Where m is the mass, g is the acceleration due to gravity (which the question has told us to assume is 10ms^-2), and h is the height of the object.
Substituting the values in:
GPE = 70*10*10 = 7000J
B: 210.8 rounded to 210 is totally wrong, and the reason why is because 210.8 rounded to the nearest whole number is 211, not 210. So B is the one with the error (this option is correct) and the other user that said D, is wrong since 18.42 does round to 18.4.
Hope this helped!
Nate
Answer:
A.
Explanation:
momentum depends on weight and speed
Answer:
Atmospheric pressure is the pressure exerted by the weight of the atmosphere.
Atmospheric Pressure = density of Mercury X acceleration due to gravity X height of column of the mercury
