What is the Maximum Speed Needed to Avoid a Collision?

[Amelina Yoo]

Homework Statement

Magna is traveling at 110 kph, and realizes Commodore in front of him is traveling at 80kph. To avoid a collision, what is the max speed the Magna can have as it reaches the commodore?

Homework Equations

The Attempt at a Solution

I am not sure how to approach this.

 

[BvU]

I am not sure how to approach this

Hi,

One way to approach this is to try a few numbers. Not extremely sophisticated, but it works to get a feeling. 100 ? 50 ?