Answer :
The kinetic energy of a model rocket when launched is 7200 Joules. The correct option is C.
What is kinetic energy?
The ability of an object to do work by virtue of its motion.
Kinetic energy is given by the expression
K.E = 1/2 mv²
where, m is the mass of the object and v is the velocity of the object.
Given is a model rocket that has a mass of 1kg at a height of 500m and it's traveling at 120m/s.
Substituting the value into the expression, we get
K.E = 1/2 x 1 x (120)²
K.E = 7200 Joules.
Thus, the correct option is C.
Learn more about kinetic energy.
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