Question

Question 4 - If Angelica starts out at 30m/s, and in 16 s speeds up to 84 m/s, what is her acceleration?

A - 3.44 m/s^2

B - 5 m/s^2

C - 3.375 m/s^2

D - 4 m/s^2

Answer 1

C.
`3.375 m/s^2`

Step-by-step explanation:

The acceleration of an object can be found using the equation:

`a=(v-u)/(t)`

where

v is the final velocity

u is the initial velocity

t is the time it takes for the velocity to change from u to v

In this problem:

u = 30 m/s is the initial velocity of Angelica

v = 84 m/s is the final velocity

t is the time

Substituting into the equation, we find the acceleration:

`a=(84-30)/(16)=3.375 m/s^2`