Show work so I can understand thanks. 1. Calculate the gravitational force between the Earth and…

Show work so I can understand thanks.
1. Calculate the gravitational force between the Earth and a
satellite of mass 100 kg (Mass of Earth = 6 x 1024 kg,
and G = 6.673 x 10-11 Distance from center of earth to
the center of the satellite = 1.2 x 107 m)
2. During the holidays the Discovery channel has a show “Pumpkin
Chunkin’ “ where the objective is to propel a pumpkin the farthest
distance. The big draw for the show is the air cannons where
compressed air is used to fire pumpkins. You should notice there is
an advantage to making the cannon barrels’ longer. The reason is to
increase the time of interaction to get a greater what?
mass or impulse or friction or displacement
3. Two cars collide completely inelastically. Car 1 has a mass
of 1000kg and was travelling at a speed of 5 m/s, car 2 was at rest
with the brake off and has a mass of 1200 kg. What is the velocity
of the car complex after the collision?

7 m/s

1.2 m/s

6.0 m/s

2.27 m/s

3.2 m/s