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OpenStudy (anonymous):
calculate the speed of an 8.0 x 10 4 kg airliner with a kinetic energy of 1.1 x 10 9 j
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OpenStudy (jamesj):
What's the formula for Kinetic energy?
OpenStudy (jamesj):
The Kinetic Energy, KE (measured in Joules) of an object of mass m (measured in kg) and of speed v (measured in meters/second, m/s), is given by \[ KE = \frac{1}{2} mv^2 \] Given that and the information in your problem, you can solve for v.
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