(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A car accelerates horizontally from rest on a level road at a constant acceleration of 3.00 m/s^2. Down the road, it passes through two photocells ("electric eyes" designated by 1 for the first one and 2 for the second one) that are separated by 20.0m. The time interval to travel this 20.0m distance as measured by the electric eyes is 1.40s.

a. Calculate the speed of the car as it passes each electric eye.

b. How far is it from the start to the first electric eye?

c. How long did it take the car to get to the first electric eye?

I know that this equation deals with Instantaneous acceleration or Instantaneous velocity, I just don't know where to start and how to get the ball rolling on working out the solution.

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Physics Mechanics Quesiton

**Physics Forums | Science Articles, Homework Help, Discussion**