Suppose you walk to your friend’s house in 15 min, then to the store which takes 45 min, and then to school which takes 25 min. If the distances are A = 435 m, B = 960 m, and C = 685 m what was the magnitude of your average velocity in kilometers per hour?

The roller coaster from problem #1 then tops a second hill at 15.0 m/s, how high is the second hill? 91.5 m 79.2 m 80.0 m 68.5 m

Awave with a frequency of 500 hz is traveling at a speed of 100 m/s. what is the wavelength?

Suppose that a mass of 2 kg is attached a spring whose spring constant is 50. the system is damped such that b = 12 . the mass is set in motion with an initial velocity of -8 m/s at a position 0 meters from equilibrium. set up and solve a differential equation that models this motion. write your solution in the form a cos ( ω t − α ) where α is a positive number. use your solution to fill in the information below: what is the amplitude of the motion? what is the value of ω ? what is the phase shift?