. Two football players move in a straight line towards one another in a straight line. Their equations of motion are as follows. X, = .1 m +(-3.1 m/s) * X = -6.3 m + (2.8 m/s) *t a) Which player is moving faster?

b) At what time do the two players collide?

What is the speed of an object at a given moment?

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.

For waves in the ocean, the medium of the waves is a. air b. water c. energy d. a passing boat