You and your fellow students have been challenged to design a rubber band powered car. You will use the elastic potential energy of the rubber band to move the car a distance. The car that moves the greatest distance is the winner of the challenge. Each student is given the same size rubber band, wheels and axles. It is up to each student to design a car they consider the most efficient car. Predict which car should move the greatest distance. Explain your choice.

A) Less drag.

B) Closed roof.

C) Convertible.

D) Compact design.

Asmall 21 kilogram canoe is floating downriver at a speed of 1 m/s. what is the canoe's kinetic energy?

Need people build a dam to create a reservoir that supplies water a nearby city needs. describe two ways this action will likely affect the water cycle in the local environment. (5 points) worth 20 points

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.