# Homework Help: Homework Plss Help!

1. Sep 28, 2005

### Martis31

so here are the two problems:

1. a sports car accelerates from rest to 95 km/h in 6.2 s. What is its average acceleration in m/s2-->SQUARED?

2. a sprinter accelerates from rest to 10.0m/s in 1.32s. what is her acceleration(a) in m/s2, and (b) in km/h2?

plsss help me i need procedure so i can understand the explanation thanksss!

Last edited: Sep 28, 2005
2. Sep 28, 2005

### whozum

Definition of average acceleration

$$a_{avg} = \frac{\Delta v}{\Delta t} \ or \ \frac{v_f-v_i}{t_f-t_i}$$

You are given changes in velocity and changes in time. Simply divide.