Data:  Acceleration due to gravity at Earth’s surface  = 9.8 m/s2 1. A car traveling at a certain speed knocks down a cyclist. The driver of the car claims that he was traveling below the speed limit of S km/h. Police measured the skid marks made by the car at D m long. It is known that the maximum deceleration for this type of car […]

Alan and Barry are at Six Flags riding the bumper cars, as shown in the diagram. (a) At the instant shown, Alan begins to accelerate at 1.25 m/s2 to a speed of 4.0 m/s and then continues at constant velocity until he hits Barry. Calculate the total time it takes for Alan to travel the distance indicated. (4 points) (b) After the collision, Barry moves […]

Hearing is often the sense that we take for granted until for some reason our hearing is significantly impaired.  Then we notice and lament the loss.  How good is your hearing?  Have you suffered from any hearing loss?  If so, were you part of the cause.  In the links below, test the age of your hearing range compared to biological age.  Is your hearing age […]