+0  
 
0
339
1
avatar

The height (in meters) of a shot cannonball follows a trajectory given by h(t) = -4.9t^2 + 18t - 0.4 at time t (in seconds). As an improper fraction, for how long is the cannonball above a height of 6 meters?

 May 14, 2021
 #1
avatar+36915 
+1

-4.9t^2 + 18t - 0.4  > 6

-4.9t^2 + 18t - 6.4 > 0      use quadratic formula to find the two t values     subtract the smaller from the larger

 May 14, 2021

2 Online Users

avatar