Two men pull a 31-kg box laying on a desk with forces 9.7 N and 7.6 N in the directions shown below. What is the normal force acting on the box?

The rocket is fired vertically and tracked by the radar station shown. when θ reaches 66°, other corresponding measurements give the values r = 32700 ft, r¨ = 85 ft/sec2, and θ˙ = 0.019 rad/sec. calculate the magnitudes of the velocity and acceleration of the rocket at this position.