1- How much force does it take to move a 137.3 kg box with an acceleration of 8.2 ms²?

2- A projectile is launched from a height of 19.8 m, with an initial velocity of 17.9 in the horizontal direction. How far away is the projectile horizontally when it hits the ground?

3- What is the acceleration of a 49.4 kg object being pushed by a 179 N force if kinetic friction pushed back with 86 N of force?

4- How much work is done by friction if a 12.5 kg object moving at 9.0 m/s slides to a stop along a rough surface?