### Test: College Algebra

Quadratic equations appear often in physics. The basic kinematic equations for the position of a particle as a function of time , with an initial velocity (a constant) and constant acceleration can be written as, This is a quadratic function in . The function therefore gives the position as a quadratic function of time . If we are dealing with a free-falling object under Earth's gravitational field, we might write this function in the form, to express the "height" of the object at a given time falling with a constant acceleration . Here the initial height (a constant). The units for acceleration are meters-per-square second . The negative acceleration is a convention to signify that the direction of the acceleration is downward.

 1 Find the time required for a ball dropped from a height of 100 m from rest to reach the ground using the quadratic function for height written below, (Hint, what is the value of the height when the ball strikes the ground?).     1/1 questions

0%

## Access results and powerful study features!

Take 15 seconds to create an account. 