Broken or bruised ribs. Introduction. Broken (fractured) or bruised ribs are usually caused by a fall or blow to the chest, or occasionally by severe coughing. They can be very painful, but will normally improve within about three to six weeks. If you think you've injured your ribs, you'll often be able to look after yourself at home.
The average speed of an object is defined as the distance traveled divided by the time elapsed. Velocity is a vector quantity, and average velocity can be defined as the displacement divided by the time. For the special case of straight line motion in the x direction, the average velocity takes the form:
This height is the average value of the function over the interval in question. Hereâs an example. Whatâs the average speed of a car between t = 9 seconds and t = 16 seconds whose speed in feet per second is given by the function, According to the definition of average value, this average speed is given by.