A cat jumps straight up from the ground with an initial vertical velocity of 9 feet per second.

a. Write an equation that models the height [h] (in feet) of the cat as a function of the time [t] (in seconds) since it jumps.

b. After how many seconds does the cat land on the ground?

Question

A cat jumps straight up from the ground with an initial vertical velocity of 9 feet per second.

a. Write an equation that models the height [h] (in feet) of the cat as a function of the time [t] (in seconds) since it jumps.

b. After how many seconds does the cat land on the ground?

saifoo.khan · Answer

velocity = disp/time

saifoo.khan · Answer

velocity = h / t

anonymous · Answer

ho ho ho  nice cat

saifoo.khan · Answer

LOL

anonymous · Answer

i think you are supposed to use 
$$h(t)=-16t^2+9t$$

anonymous · Answer

to find the amount of time the little kitty is in the air, set this equal to zero and solve. you get 
$$-16t^2+9t=0$$
$$t(9-16t)=0$$
$$t=\frac{9}{16}$$

anonymous · Answer

I see how you get t(9-16t)=0  But how does t=9/16?

anonymous · Answer

i set 
$$9-16t=0$$
$$9=16t$$
$$\frac{9}{16}=t$$

anonymous · Answer

What happens to the t in the beginning?