Question

A tree limb falls from a dead tree all the way to the ground. The height, in meters, of the tree limb above the ground as it falls is modeled by the function h[t]=-4.9t squared + 10 where t is the number of seconds the tree limb has been falling.

What is the meaning of h[1.25]=2.34?   

A. The tree limb is 2.34 meters above the ground after falling for 1.25 seconds.
 
B. The tree limb has fallen 1.25 meters after falling for 2.34 seconds.
 
C. The tree limb is 1.25 meters above the ground after falling for 2.34 seconds.
 
D. The tree limb has fallen 2.34 meters after falling for 1.25 seconds.

Answer 1

A. The tree limb is 2.34 meters above the ground after falling for 1.25 seconds.

Reason: h(t) gives height (meters) as a function of time (seconds), so h(1.25)=2.34 means the height at t=1.25 s is 2.34 m.