Relate temperature to the average kinetic energy in a material.
1 answer:
<u>Answer:</u>
Temperature is always directly proportional to average kinetic energy of the material.
<u>Explanation:</u>
The average kinetic energy is given by the formula
Where K = average kinetic energy . R = gas constant , NA = avogadro's number, T = temperature
From the formula we can clearly see that K is directly proportional to T i.e kinetic energy increases with increase in temperature.
As a substance when it absorbs the heat , temperature increases which makes the faster movement of the particles thus increasing the kinetic energy.The above formula is applicable to gaseous molecules.
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Explanation:
1.
We use the equation
h = , where
h is the height traveled,
g is the acceleration due to gravity and
t is the time taken to reach height h.
We can now calculate t to be
= 0.495 s
Let v be the initial velocity of the player.
The player deaccelarates from v m/s to 0 m/s in 0.495 s at the rate of 9.81 m/s^2.
v = 9.81 m/s^2 x 0.495 s = 4.85 m/s
2.
The player takes 0.3 s to increase his velocity from 0 m/s to 4.85 m/s. So his average accelaration is
4.85 m/s / 0.3 s = 16.2 m/s^2