0
How do I find the speed of a vehicle when all I know is the length of the skid marks 24.2 metres and the pavement was wet at this time with a very slight slope down?
Wiki User
∙ 6y ago
To find the speed you would need to find the time taken to create the skid marks and then use the equations of motion.
As the vehicle is skidding, the wheels are not turning so the braking force is the friction between the tyre and the road surface; this has to overcome the forward speed of the vehicle and the forward force of the weight of the vehicle along the road (as there is a downward slope).
The forward force of the vehicle can be calculated by knowledge of the mass of the vehicle and the angle of the slope.
The frictional force generated can be calculated from the coefficient of friction between the tyres and the road surface, and the mass of the vehicle. The road being wet will reduce the coefficient of friction of the road surface/tyre boundary compared to when the road surface is dry.
It is easier, by experiment, to do a few test runs using a vehicle of similar mass under similar conditions to get how the vehicle is likely to have slowed down when it skidded, and extrapolate/interpolate to the given distance of 24.2 m.
Wiki User
∙ 6y ago
Wiki User
∙ 6y agoNot enough information for an exact calculation. You would have to get some information to get a reasonable ESTIMATE about the typical acceleration under these circumstances, then use the standard formula for acceleration.
Add your answer:
Earn +20 pts
4 synonyms for little?
Diminutive, miniature, slight and inconsiderable
What is the difference between moderate and increase?
Moderate=slight Increase=A gain.
Slight convex curve in surface of road?
Surely it must be the camber?
Is slightly an adjective or an adverb?
The word "slightly" is an adverb.The adjective of the word is slight.
How do you say algebra in different languages?
With slight pronunciation variations, the word "algebra" is the same in most languages.
On a 1989 Dodge Spirit ES front-wheel drive why would the front tires seem to 'slap' the pavement at 45mph on a slight upgrade?
check your struts sounds like they are worn out
what is most likely an acquired trait in horse A color of fur B length of ears C ability to run D a slight limp need help and like asap I am not good in science thank you?
A slight limp
What do you experience when the vehicle starts from rest?
When a vehicle starts from rest, you may experience a slight jolt or movement as the engine engages and the vehicle begins to move forward. You may also hear the engine revving as it builds up power to propel the vehicle. Additionally, you may feel a gradual increase in speed as the vehicle accelerates.
Why does the Front of the car judder at around 60 mph but goes when clutch is depressed?
tension on the motor causes a slight vibration in the on the frame of the vehicle
Does MDF have grain?
Not really, there may be a slight difference from the manufacturing process, the grain running the length of a full sheet, but it is nothing you are going to notice.
What is the relationship between C-H bond length and the C-C bond order?
A slight decrease in C-H bond length as C-C bond order increases. However the change is small.
What happened in 1752 to cause England less white xmases?
Eleven days removed from the calendar, to adjust for a slight miscalculation of the year's length by Julius Caesar.
Is there danger in using a vehicle with wipers not parking?
As long as they actually work, there is a slight danger in that the wiper may create a blind spot in your view. Other than that, I see no danger.
How do you put slight in a sentence?
There is a slight mistake in your question. slight means: small in amount
Is it true that the days become shorter because of earthquakes?
Only in some cases, and only to a very slight degree. Megathrust earthquakes, which occur at subduction zones result in the downward movement of large amounts of rock. This results in a very slight reduction in Earth's mean radius, which leads to a slight increase in the rotation speed. This then results in a the day length being reduced by a few millionts of a second.
How do you cleaning Saturn sunroof drains?
Use a 10-foot long length of Weedeater trimmer cord. The drains are at the front and rear corners. Introduce with a slight twisting motion.
Should a pt cruiser make a slight roaring noise about 45 mph?
My PT roars like mad on coarse blacktop, but is quiet as a mouse on new pavement. I blame the tires, but I wonder about a gap at the bottom of the rear doors. I have also heard Goodyear tires blamed for some road noise.
