What variable will you need to find the force of gravitational attraction between 60 kg boy sitting 1 meter away from 55 kg girl,
List all the variables you will need to solve the above problem and explain why you chose the variables

the chart show the masses and velocities of two colliding objects that stick together after a collision.

according to the law of conservation of momentum, the momentum of the object after the collision is  

answer

1,500

kg • m/s.

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2