1. Using the formula for gravity, show that the force of gravity on a 1-kg mass at Earth’s surface is nearly 10 N. You need to know that the mass of Earth is  kg and its radius is  m. 2. Calculate the...

1. Using the formula for gravity, show that the force of gravity on a 1-kg mass at Earth’s surface is nearly 10 N. You need to know that the mass of Earth is
 kg and its radius is
 m.

2. Calculate the force of gravity on the same 1-kg mass if it were
 m above Earth’s surface (that is, if it were two Earth radii from Earth’s center).