4. Michael and his twin brother have a combined mass of 150 kg and are zooming along in a 100 kg amusement park bumper car at 7 m/s. They bump Sarah's car, which is at rest.
Sarah has a mass of 30 kg. After they collide, the twins continue ahead with a speed of 2.5
m/s. How fast is Sarah's car bumped across the floor?
Variables:
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Consider a one meter long horizontal pipe with a constant 100 cm^2 cross sectional area. water flows rightward into the pipe at x = 0 with flow velocity 02m/sec at every point within the pipe intake area. at x=1, the rightward flow rate is 0.192 m/sec. assume the water is a conserved quantity in the pipe, so there must be a leak (a sink) somewhere in the pipe. 1. compute net volumetric flow of the source if the system to be in equilibrium. 2. now assume the pipe in the problem has no leaks. compute the net volumetric rate of change for the system.