A 0.600-kg ball traveling 4.00 m/s to the right collides with a 1.00-kg ball travel- ing 5.00 m/s to the left. After the collision, the lighter ball is traveling 7.25 m/s to the left. What is the velocity of the heavier ball after the collision? A 90.0-g disk traveling 3.00 m/s to the right collides with a 75.0-g disk traveling 8.00 m/s to the left. After the collision, the heavier disk is traveling 7.00 m/s to the left. What is the velocity of the lighter disk after the collision? A 98.0-kg parts cart with rubber bumpers rolling 1.20 m/s to the right crashes into a similar cart of mass 125 kg moving left at 0.750 m/s. After the collision, the lighter cart is traveling 0.986 m/s to the left. What is the velocity of the heavier cart after the collision? 5. A 75.0-kg paint cart with rubber bumpers is rolling 0.965 m/s to the right and strikes a second cart of mass 85.0 kg moving 1.30 m/s to the left. After the col- lision, the heavier cart is traveling 0.823 m/s to the right. What is the velocity of the lighter cart after the collision? A railroad car of mass 2.00 X 104 kg is traveling north 6.00 m/s and collides with a railroad car of mass 1.50 x 10 kg traveling south 4.00 m/s. Find the velocity of the railroad cars that become coupled after the collision. 6. 7.

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster th…