# Acceleration in an inertial reference frame

• Swag ranger

## Homework Statement

3. (a) If an object's acceleration is zero in one inertial reference frame then is its acceleration zero in all other inertial reference frames? (b) If an object's velocity is zero in one inertial reference frame then is its velocity zero in all other inertial reference frames?

## The Attempt at a Solution

I think it's going to be zero in both questions both I'm not so sure and I need an explanation

Hi Swag ranger,

Welcome to Physics Forums.

What do you know about inertial reference frames? How are they defined?

Hi Swag ranger,

Welcome to Physics Forums.

What do you know about inertial reference frames? How are they defined?
An object that does not accelerate

An object that does not accelerate
No, not quite. A reference frame is not necessarily associated with a particular object. It's a coordinate system that has particular properties (particularly with respect to other inertial reference frames).

Suggestion: Take a look at the Wikipedia article regarding Inertial Reference Frames:

Inertial frame of reference - Wikipedia