if something is shot straight up in the air at a speed of 17 m/s, how much time before I it will hit the ground

Polly is pushing a box across the floor with a force of 30 n. the force of gravity is –8 n, and the normal force is 8 n. which value could describe the force of friction if polly could not move the box?

What’s #16 asking me and how do i solve it?

What are the necessary conditions for fusion?