show allwork please

4) A truck weighing 25,100 newtons drives 22.0 meters per second when it hits a stationary car weighing 12,510 newtons. The truck hits the car and results in a non-elastic collision. What is the velocity of the truck and car after the collision? Make your answer in m/s. (10 points) 5) Determine the torque at point O. Write your answer in Newton-meters. (10 points) 6) This picture shows a man pulling a crate with a rope. He is pulling with 121.0 pounds of force on the rope. He pulls this crate to a new position 16.75 feet away in the direction he is moving the crate. How much work will he have done moving the crate when he is done? Make your answer in foot-pounds (10 points)