# Physics (URGENT!)

posted by .

-vehicle 1: 2,060lbs
-vehicle 2: 5,800lbs
-The cars were impacted at right angles
-friction between tire & road: .60=mu
-skid marks (PRIOR to impact): v1=20ft, v2=7ft.

*you can find the entire problem w/ more info online if you google: "john henry vehicle 5,800" it'll be the first one.

we need to figure out what was the
-velocity of both cars before impact.
-how fast does a car need to go to leave a 7ft. skid mark from a dead stop? (this ties into trying to solve who was speeding, or if both were, and if one ran the stop sign.)

*please show all work and formulas used. thankyou!

## Similar Questions

1. ### Physics

if a vehicle with a mass of 5,800lbs left skid marks that were 7ft. long, how fast were they going?
2. ### math

hi.A vehicle weighing 1.3 tonne leaves skid marks 23 meters long.After 15 meters it hit pedestrain.The co efficient of friction is .7 .what was vehicle initial speed at start of skid and at impact.thanks
3. ### physics

hi.A vehicle weighing 1.3 tonne leaves skid marks 23 meters long.After 15 meters it hit pedestrain.The co efficient of friction is .7 .what was vehicle initial speed at start of skid and at impact.thanks
4. ### Physics

A car skidded on a roadway that has a coefficient of friction with the road of 0.7. A police officer measured the skid marks and noted them to be 100 feet long. Two years later at trial, the lawyer for the driver argues that the officer …
5. ### Physics

Vehicle A is 819.017 feet behind vehicle B. Vehicle A is traveling at 93.602fps and vehicle B is traveling at 44fps. How long until vehicle A catches vehicle B?
6. ### Math

What was the probable speed of a vehicle travelling on a dry tarred road before a collision occurred if the driver braked hard to avoid a collision, causing the brakes to lock and to leave skid marks of 25 metres?
7. ### Physics

A roadway for stunt drivers is designed for race cars moving at a speed of 95 m/s. A curved section of the roadway is a circular arc of 760 m radius. The roadway is banked so that a vehicle can go around the curve with the friction …
8. ### Physics

A 1750 kg van is travelling down a 10 degrees inclined road at a speed of 6 m/s. If the driver brakes suddenly causing the wheels to lock, determine the distance L his tyres will skid on the road. The coefficient of kinetic friction …
9. ### Science

A 1750 kg van is travelling down a 10 degrees inclined road at a speed of 6 m/s. If the driver brakes suddenly causing the wheels to lock, determine the distance L his tyres will skid on the road. The coefficient of kinetic friction …
10. ### Algebra

The formula relating the speed of a vehicle (S, in miles per hour) that a car was traveling at the moment the brakes were applied causing the vehicle to skid to a stop, traffic investigators use the formula S = square root of 30fL, …

More Similar Questions