Respuesta :
Answer:
The rock hits the ground between 2
seconds and 2.5
seconds after it is dropped.
Step-by-step explanation:
At 2 seconds, the height of the rock is 0.4 meters, and at 2.5 seconds the height of the rock is -10.6 meters. Therefore, the rock hit the ground, or 0 meters, between those times.
Answer:
The rock hits the ground between 2 and 2.5 seconds.
Step-by-step explanation:
The given table is:
t h(t)
0 20
0.5 18.8
1 15.1
1.5 9
2 0.4
2.5 -10.6
3 -24.1
The ground level is when h(t) = 0, which is between 0.4 and -10.6, because in that interval is included the zero. So, the problem is asking when does the rock hit the ground, referring to time. We just have to look for t-values for 0.4 and -10.6.
Therefore, the rock hits the ground between 2 and 2.5 seconds.
