1.10 Inertial and Non-Inertial Frames of Reference

True or False? The law of inertial holds in an inertial frame of reference.

• True

• False

True or False? The law of inertia holds in a non-inertial frame of reference.

• True

• False

Which statement is false?

• Accelerating frames of reference are non-inertial frames of reference.

• Fictitious forces are created in non-inertial frames of reference to explain what we observe.

• Fictitious forces are needed in inertial frames of reference to describe what we observe.

• When being an observer in a non-inertial frame of reference, you can see some odd/cool things.

A bus begins from rest, accelerates to 10 m/s and stays at that speed for 2 minutes. The bus comes to a red light and decelerates to a stop. When is a passenger in the bus in a non-inertial frame of reference? (more than 1 answer)

• At rest

• Accelerating

• Travelling at 10 m/s constantly

• Slowing down