The complete exercise is: "Jennifer hit a golf ball from the ground and its movement follows the equation , where t is the time in seconds, and h(t) is the height of the ball at a given time "t". Find the time that it took the golf ball to hit the ground."
The quadratic function is:
Since the ground is at , you need to substitute this into the function:
Now you must solve for "t". The steps are:
- You need to subtract 100 from both sides:
- Now you must divide both sides of the equation by -16:
- Applying the square root both sides of the equation, you get:
the answer is a i belaeve atleast thats what my calculator just gfave me