Question

Part A) If the coefficient of kinetic friction between tires and dry pavement is 0.74, what is the shortest distance in which you can stop an automobile by locking the brakes when traveling at 23.1 m/s? d= (value) (units)?. Part B) On wet pavement, the coefficient of kinetic friction may be only 0.25. How fast should you drive on wet pavement in order to be able to stop in the same distance as in Part A? (Note: Locking the brakes is not the safest way to stop.) v= (value) (units)?

Answer #1

If the coefficient of kinetic friction between tires and dry
pavement is 0.93, what is the shortest distance in which you can
stop an automobile by locking the brakes when traveling at 30.1 m/s
?
Part B
On wet pavement, the coefficient of kinetic friction may be only
0.25. How fast should you drive on wet pavement in order to be able
to stop in the same distance as in part A? (Note:Locking
the brakes is not the safest way...

The coefficient of kinetic friction between rubber tires and wet
pavement is 0.50. The brakes are applied to a 1750kg car travelling
27.8m/s and the car skids to a stop. What is the size and direction
of the force of friction that the road exerts on the car? What
would be the size and direction of the acceleration on the car? How
far would the car travel before stopping? If the tires of the car
did not skid, the coefficient...

1. A 1500kg vehicle is moving on a dry pavement where
the coefficient of friction is 0.80. If the vehicle is traveling at
25m / s, that minimum distance is required to stop it when the
brakes are applied.
a. 72m
b. 64m
c. 55m
d. 40m
e. none of the above
2. The position of a point on a rotating disk is given
by 0 (t) = 3.00t-2.00t ^ 2 + 1.00t ^ 2 where 0 is in radians...

You are driving down IL-53 at 45 miles per hour in your 1325 kg
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stopped car in front of you, and hit the brakes. Your car skids
along the concrete (µk=0.8 between rubber and dry concrete) and
slows. (a) How far does your car travel in those 2.0 s...

A ball thrown vertically upward is caught by
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Find the initial velocity of the ball. The
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Answer in units of m/s.
002 (part 2 of 2) 10.0 points
Find the maximum height it reaches.
Answer in units of m.
003 (part 1 of 2) 10.0 points
A car is traveling at 42.3 km/h on a flat
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February 3, 2009, was a very snowy day along Interstate 69 just
outside of Indianapolis, Indiana. As a result of the slippery
conditions and low visibility (50 yards or less), there was an
enormous accident involving approximately 30 vehicles, including
cars, tractor-trailers, and even a fire truck. Many witnesses said
that people were driving too fast for the conditions and were too
close together. In this problem, we explore two rules of thumb for
driving in such conditions. The first...

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