Question

the expression 16t^2 models the distance in feet that an object falls during t seconds after being dropped. what distance will an object fall in 4 seconds?

Answer 1

In this expression, the variable ’t’ stands in for any possible value of seconds. Therefore, since you know how long it takes the object to fall in seconds, you can put this into the expression. 16 x (4^2) = 256. The distance is 256ft.

Answer 2

1. it fell in 2 seconds so plug the "t" with 2

2. 16*4²  ⇒   4² = 16

3. 16*16 = 256