Question

Starting from rest, the Road Runner accelerates at 3 m/s for ten seconds. What is the final velocity of the Road Runner?

Answer 1

(3 m/s²) x (10 s) = 30 m/s

His speed at the end of 10 sec is 30 m/s. We can't describe his velocity, because we have no information about the direction he's moving.

Answer 2

The answer to this question is
`30 ms^(-1)`

Step-by-step explanation

As we know that accelartion is the rate of change of velocity. So, it can be write as

`a = (V_f -V_i) /t`

where

`V_f` is the final velocity

`V_i` is the initial velocity

t is the time

a is the accelartion

as we konw

`a = 3 ms^(-2)`

t = 10 s

From rest So,

`V_i` = 0

`V_f` = ?

Putting values

`3 = (V_f - 0)/10`

`3 * 10 = V_f`

`30 = V_f`

`V_f = 30 ms^(-1)`

So, the right answe is
`30 ms^(-1)`