Question

he formula below gives V, the velocity in feet per second of a falling object t seconds after it has been dropped.

V(t) = 32t

If a rock is dropped off a bridge, how fast will it be falling after 3 seconds?

A. 64 feet per second
B. 96 feet per second
C. 35 feet per second
D. 128 feet per second

Answer 1

You are given that formula:
\(V(t)=32\cdot t\)

What this formula means is that your velocity V(t), at the time of t seconds, will be 32 times that t.

So for example if I wanted to find the velocity after 5 seconds (at t=5), then
I would plug in 5 into the formula:
\(V(5)=32\times 5=160\)

Answer 2

You need to do the same, but in your case- after 3 seconds (at t=3).

Answer 3

ty