(adsbygoogle = window.adsbygoogle || []).push({}); 1. Can someone please help with this equation

2.An accelerating lab cart passes through two photo gate timers 3.0 m apart in 4.2 s. The velocity of the cart at the second timer is 1.2m. What is the cat's velocity at the first gate?

3. So I am so confused as to how to find the initial velocity. I used d=(Vi + Vf/2) *t which is 3.0= (Vi + 1.2/2) *4.2. The solution Vi=0.23m/s. I have no clue if I am way off. Can someone please tell me if I am on the right track. Thank you!

The last time I took physics was 8 years ago and now I'm trying to upgrade. Wish I spent more time on homework, less on hair!

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# Homework Help: Confused with simple equation

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