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For an object of mass the energy required to escape the Earth's gravitational field is GMm / r, a function of the object's mass (where r is the radius of the Earth, G is the gravitational constant, and M is the mass of the Earth, M =5.9736Ã10 24 kg).or a mass equal to a Saturn V rocket, the escape velocity relative to the launch pad is 253.5 am/s (8 nanometers per year) faster than the escape velocity relative to the mutual center of mass.
Determine the kinetic energy of a 625-kg roller coaster car that is moving with a speed of 18.3 m/s. Answer: 105,000J define variables: - M= 625kg, V= 18.3 m/s find formula for determining kinetic energy: - K=1/2mv2 plug numbers into equations, replacing variables: - K = (0.5) (625 kg) (18.3 m/s)2.