A car traveling 100.0 m/s is trying to pass a 500.0 m long train traveling in the same direction on a track parallel to the road. If the train's speed is 50.00 m/s, a) how long does it take the car to pass it, and how far will the car have traveled in this time? b) what are the results if the train and car are moving in opposite directions?

Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 740 n/m. it is initially at rest on an inclined plane that is at an angle of theta= 26 with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is uk = 0.17. in the initial position, where the spring is compressed by a distance of d = 0.16 m, the mass is at its lowest position and the spring is compressed the maximum amount. take the initial gravitational energy of the block as zero. the block's initial mechanical energy is 9.472 j.b. if the spring pushes the block up the incline, what distance l in meters will the block travel before coming to rest? the spring remains attached to both the block and the fixed wall throughout its motion.