Hey Thank you for helping me, I will do it right the next time.gneill said:Hi eefje, Welcome to Physics Forums.
FYI, you should list the standard equations that you will use in the relevant equations section, then show how you applied them in your attempt at a solution.
I see that you didn't account for the distance traveled during the driver's reaction time period. How far does he travel before he bgins to decelerate?
you mean in the 0,5s ? Δv= Δx/ Δtgneill said:What basic equation are you applying for the period in which he decelerates?
You're good for the first period (reaction time period). ##d = vt##eefje said:you mean in the 0,5s ? Δv= Δx/ Δt
and after that: Δx= a*Δt^2+Δv*t
Δv=a*Δt
Thank you very much, I can solve it now. the 1/2 was a stupid mistake, but I didn't know that the distance in the 0,5 s important was. Thank you :)gneill said:You're good for the first period (reaction time period). ##d = vt##
For the second period where acceleration is happening you want the standard kinematic formula ##d = v_o t + \frac{1}{2} a t^2##.
Note the "1/2" constant that multiplies the acceleration term.
The total stopping distance of a car is affected by several factors, including the speed of the car, the condition of the brakes, the condition of the tires, and the road surface. Other factors such as weather conditions and the weight of the car can also play a role in the stopping distance.
The total stopping distance of a car is calculated by adding together the thinking distance and the braking distance. The thinking distance is the distance the car travels while the driver reacts to a potential hazard, and the braking distance is the distance the car travels while braking to a complete stop.
The average stopping distance for a car traveling at 60 mph is approximately 240 feet. This includes an average thinking distance of 60 feet and an average braking distance of 180 feet.
The higher the speed of the car, the longer the total stopping distance will be. This is because as the speed increases, the thinking distance and braking distance also increase. It takes longer for the driver to react and for the car to come to a complete stop at higher speeds.
Yes, the total stopping distance of a car can be reduced by maintaining the car's brakes and tires in good condition, driving at a safe speed, and paying close attention to the road and potential hazards. In addition, keeping a safe distance between vehicles and avoiding distractions while driving can also help reduce the total stopping distance.