A metric unit of volume
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We have that the gravitational energy is given by: U=mgh where m is the mass of the object (in kg), g is the gravitational acceleration and h is the height of the object (in meters). Hence, h=U/(m*g) where g=9.8 m/s^2. Thus, h=20 m if we substitute.
Similarly, substituting in b, we have that the height of the model plane is 10 m. The kinetic energy is given by: K=
where u is the speed of the object. Hence, solving for u we have u=
. Substituting, we have that u=5m/s.
Similarly, substituting in b, we have that the height of the model plane is 10 m. The kinetic energy is given by: K=