A meteoroid is moving towards a planet. It has mass m = 0.86x10 kg and speed v1 = 4.7x10' m/s at distance R1 = 2.3x10 m from the center of the planet. The radius of the planet is R = 0.74x107m. The mass of the planet is M = 7.6x1025 kg. There is no air around the planet.
(a) Enter an expression for the gravitational potential energy PEof the meteoroid at R, in terms of defined quantities and the gravitational constant G.
Part (b) Calculate the value of PE1, in joules. HA 14%
Part (c) Enter an expression for the total energy E, of the meteoroid at R, in terms of defined quantities. A 14%
Part (d) Calculate the value of E1, in joules. A 14%
Part (e) Enter an expression for the total energy E of the meteoroid at R, the surface of the planet, in terms of defined quantities and v, the meteoroid's speed when it reaches the planet's surface.
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A meteoroid is moving towards a planet. It has mass m = 0.86x10 kg and speed v1 = 4.7x10' m/s at dis...
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