- #1
meredith
- 16
- 0
Homework Statement
two cars are traveling along a straight road, one behind the other. the first is traveling at a constant velocity of 12 m/s. the second, approaching from the rear, is traveling at 25 m/s. when the second car is 200m behind the first, the driver applies the brakes, producing a constant acceleration of -0.20 m/s^2. will the cars crash and if so, where and when?
Homework Equations
acceleration = (change in velocity)/(change in time)
change in dispacement = (Initial velocity) (time) + (1/2) (acceleration) (time sqaured)
velocity = (acceleration) (time)
The Attempt at a Solution
i got they woud crash after 50 meters? but i don't think that's right :(