SOLVE THE FOLLOWING WITH SOLUTION

4. While moving at 40 m/s , an object accelerates uniformly by 6 m/s' in 9 seconds. a) What is the velocity after this time interval ? b) How far does it go during this period ? 5. A moving car decelerates uniformly by 8 m/s and comes to stop after 6 seconds. What is the distance travelled during deceleration ? 6. The train engineer of the new PNR train applied the brake while moving at 45 m/s. It produce a breaking acceleration of 1.25 m/s' .How much distance would be needed to fully stop the train