- #1
negation
- 818
- 0
Homework Statement
You're speeding at 85km/h when you notice that you're only 10m behind the car in front of you which is moving at the legal speed limit of 60km/h. You slam on your brakes and your car negatively accelerates at 4.2m/s/s. Assuming the other car continues at constant speed, will you collide? If so, at what relative speed?
Otherwise, what will be the distance between the cars at their closest approach?
Homework Equations
None.
The Attempt at a Solution
t = [vf-vi]/a
t = [0-23.61ms^-1]/-4.2ms^-2
t = 5.619s
at t = 5.619s, my car would have traveled 66m
the car moving at 60kmh^-1 would have traveled 93.65m
No collision occurs and the minimum distance between the 2 cars is (93.65m-66m)+10m
Last edited: