an object is dropped from a bridge and allowed to free - fall to the ground. the height of the object over…
an object is dropped from a bridge and allowed to free - fall to the ground. the height of the object over time can be modeled using $h(t)=144 - 16t^{2}$. how many seconds will it take the object to reach the ground?\n2 seconds\n3 seconds\n9 seconds\n16 seconds
Answer
Answer:
B. 3 seconds
Explanation:
Step1: Set height to 0
When the object reaches the ground, $h(t)=0$. So we set $144 - 16t^{2}=0$.
Step2: Rearrange the equation
Add $16t^{2}$ to both sides: $16t^{2}=144$.
Step3: Solve for $t^{2}$
Divide both sides[Client Connection Error]