Question: For this problem, we assume that we are on Planet-I. The radius of this planet is R =3140 km, the gravitational acceleration at the surface

For this problem, we assume that we are on Planet-I. The radius of this planet is R =3140 km, the gravitational acceleration at the surface is 9/ =9.68 m/s, and the grav- itational constant G = 6.67 x 10 N m/ kg2 in SI units. The mass of Planet-I is not given. Not all the quantities given here will be used. Suppose a cannon ball of mass m = 3120 kg is projected vertically upward from the sur- face of this planet. It rises to a maximum height h =14758 km above the surface of the planet. Caution: Here the gravitational accelera- tion decreases as the cannon ball travels away from Planet-I. h R Determine the kinetic energy (in Joules) of the cannon ball immediately after it is fired off Answer in units of J

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