a 5.00 block is moving at 7.00 along a horizontal frictionless surface toward an ideal massless spring attached to a wall. the block collides with the relaxed spring, eventually compressing it by a maximum amount of 0.68 . what was the speed of the block when the spring was halfway to its maximum compression, i.e. when the spring was partially compressed by only 0.34 ? answer: 1013f21 finalexam q07 description: part a a car heading north and a truck heading east collide at an intersection. the two vehicles, whose masses are identical, lock together after the collision and travel together at 40 heading 46 north of east. how fast was the car traveling just before the collision? assume that any other unbalanced forces on the car or truck are negligible. answer: 1013f21 finalexam q08 description: kg km (1/1000) * sqrt(g * m / (1000 * r orbit km))