A rock is dropped from a bridge 320 feet above a river the pathway that the rock takes is modeled by the equation h=16t+320 how long will it take the rock to reach the river
To find out how long it will take the rock to reach the river, we need to determine when the height of the rock (h) is equal to zero, as this is when it reaches the river.
Given the equation h=16t+320, where h is the height of the rock above the river and t is the time in seconds, we set h to zero and solve for t:
0 = 16t + 320
16t = -320
t = -320/16
t = -20
Since time cannot be negative in this context, we disregard the negative solution and conclude that it will take the rock 20 seconds to reach the river.