\fInstead of the sand after point D, let there be a spring mounted as shown in the sketch to the right. This spring has a constant of 10.0 N/m D C 6. When the van arrives at point D, the van begins to compress the spring. At the instant the spring is compressed 0.100 m, what was the KINETIC ENERGY of the van? What is the van's speed at this point? (answers: 0.150 J 1.73 m/s) 7 . What was the maximum compression of the spring? (answer: 0.170 m) Suppose that instead of the level section and spring the track continued to slope upward past point C (as shown to the right. Let all other conditions remain the same. n=? 9. What is the maximum height that the van will attain? (answer: 1.00 m) 10. Suppose someone reaches in as the van is moving from A toward C and give the van a shove in the direction o the van's motion thereby doing +0.50 J of work on the van. What is the maximum height the van will reach this time? If the shove is in the direction opposite to the direction of motion, what is the maximum height the van will reach? (answer: 1.50 m, 0.500 m)