Ask Experts Questions for FREE Help !
Ask
    Malakzay's Avatar
    Malakzay Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Sep 7, 2009, 01:10 PM
    Is that friction?
    Near the bottom of the slope, the skateboarder reaches a patch of gravel and quickly comes to rest... why does this happen
    tickle's Avatar
    tickle Posts: 23,796, Reputation: 2674
    Expert
    		  
    #2

    Sep 7, 2009, 01:25 PM

    Maybe... because his gravity was halted... and then he does a header because it was an abrupt stop resulting in a broken neck, broken leg, whatever. Then he learns not to do that again by association.:eek:

    Tick
    Capuchin's Avatar
    Capuchin Posts: 5,255, Reputation: 656
    Uber Member
    		  
    #3

    Sep 7, 2009, 03:13 PM
    Quote Originally Posted by Malakzay View Post
    near the bottom of the slope, the skateboarder reaches a patch of gravel and quickly comes to rest.......why does this happen
    It's not really friction, but energy is very quickly transferred from the skateboarder into the gravel because of the rough surface, and the fact that the gravel is loose. So the skateboarder stops quickly.
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search


Check out some similar questions!

Friction [ 1 Answers ]

I am doing my physic coursework and have to explain why the greater the mass, the greater the frictional force,that the more uneven the surface the more frictional force and finally the greater the surface area the greater the friction. Please help it is for my coursework.

Friction (I really need it) [ 2 Answers ]

What is the steepest incline that can be climbed by a car at constant velocity if the coefficient between the tires and the road is .60?

Static friction and kinetic friction [ 2 Answers ]

:confused: :confused: A force of 30.0 N is required to start a 4.4 kg box moving across a horizontal concrete floor. (a) What is the coefficient of static friction between the box and the floor? (b) If the 30.0 N force continues, the box accelerates at 0.50 m/s2. What is the coefficient of...

Friction [ 5 Answers ]

A 200-N sled is pushed along a horizontal surface at constant speed with a 50-N force that makes an angle of 28 degrees below the horizontal. What is the coefficient of kinetic fricition?

Friction [ 3 Answers ]

Hi guyz and girlz! What an amazing site it is! Believe it or not I was searchin for some sciecetific sites such as this Here is this In front of my eyez Well dears

View more questions Search