# Homework Help: Physics Test Question Solution?

1. Feb 6, 2012

### MyNameIsMud

1. The problem statement, all variables and given/known data
So I just had a Physics test and I couldn't get the solution to this problem. I was hoping someone could tell me how to do it correctly.

This isn't the exact wording, as I already forgot it, but here it goes:

A skateboarder moves on his skateboard horizontally 3.2m, in that distance his velocity changed from 95 cm/s to 51 cm/s. what is the acceleration assuming its constant? What is the total time of this event?

2. Relevant equations
5 equations for constant acceleration

3. The attempt at a solution
It's on my test paper.

2. Feb 6, 2012

### Staff: Mentor

Welcome to the PF.

What is the equation for acceleration in terms of Δv and Δt?

Be sure to be consistent in your units as well. It's probably best to convert those velocities into m/s before doing the calculation.

3. Feb 6, 2012

### SammyS

Staff Emeritus
One of those kinematic equations relates the following:
initial velocity
final velocity
displacement
acceleration​
Use that equation.