Friday

November 28, 2014

November 28, 2014

Posted by **Kristen** on Sunday, September 9, 2007 at 2:40pm.

- AP Physics -
**bobpursley**, Sunday, September 9, 2007 at 5:42pmLet tr be reaction time.

The distance traveled during the reaction time is vi*tr, so the distance traveled during stopping is (distancetotal-vi*tr). Now you have an equation...

Vf^2=Vi^2 + 2ad Use that. I will set up one equation for you, you do the second, and solve for tr, and a.

1) 0=24.4^2 + 2a (56.7-24.4tr)

2) ....

- AP Physics -
**Kristen**, Sunday, September 9, 2007 at 8:03pmI still dont get how to get the time it takes to decelerate from 82.5 to 50.3 km/h, i know its a constant deceleration, but i know how to find either the deceleration or the time

- AP Physics -
- AP Physics -
**Kristen**, Sunday, September 9, 2007 at 7:31pmI still dont get how to get the time it takes to get from 82.5 to 50.3 km/h, i know its a constant deceleration, but i dont know how to get the time

- AP Physics -
**Kristen**, Sunday, September 9, 2007 at 7:59pmI still dont get how to get the time it takes to get from 82.5 to 50.3 km/h, i know its a constant deceleration, but i dont know how to get the time it takes to decelerate

**Answer this Question**

**Related Questions**

Physics - To stop a car, you require first a certain reaction time to begin ...

Physics - To stop a car, first you require a certain reaction time to begin ...

Physics - Proper design of automobile braking systems must account for heat ...

physics - Proper design of automobile braking systems must account for heat ...

Physics - You are driving down the highway late one night at 20 m/s when a deer ...

college math - Braking distance The braking distance y in feetthat it takes for ...

psychics - 1. (a) A frictionless car of mass 1.5 tonnes travels uphill along a ...

physics - Proper design of automobile braking systems must account for heat ...

Physics - The braking distance of a car is 29m. If the speed of the car is ...

Physics - A CAR HAS A MASS OF 1200KG TRAVELLING ON A LEVEL ROAD. THE CAR ...