A mass weighing 6.4 pounds will stretch this spring 1.28 feet. The spring/mass system is damped by a force that is 1.6 times the instantaneous velocity of the mass. Determine the equation of motion of the mass, if the mass is stretched 1 foot below its equilibrium point and released.

An experiment is designed to test the relationship between the initial height of a basketball before it is dropped to the height of its rebound bounce. the height of the rebound bounce is measured using a scale positioned behind the ball. in the above experiment, which condition would not be controlled? a). the starting height of the ballb). the surface the ball bounces on c). the type of ball d). the method to measure the rebound height of the ball

2) the sun is wonderful source of energy. it is renewable and natural with few dangers. solar cells rely on the sun for energy. these cells would be more practical to use if they were

Which of the following is not used to measure wind? oa. psychrometero b. wind socko c. weather vaneo d. anemometer