Question
In: Physics
A car enters an onramp of a highway at 21.8 m/s and travels at a constant...
A car enters an onramp of a highway at 21.8 m/s and travels at a constant velocity for 3.63 s before speeding up to a final velocity of 32.1 m/s in 6.90 s to merge with highway traffic. The total time taken for the trip is 10.5 s. Assume the car doesn't have to change direction for this motion (1D motion).
Draw a picture of this motion and create a coordinate system
Please reverse the direction of your coordinate system. Which variable(s) must be changed due to this coordinate system reversal. Which variable(s) are not affected by this coordinate system change?
Solutions
genius_generous answered 2 years agoRelated Solutions
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A) A car travels at a constant speed of 32.5 mi/h (14.5 m/s) on
a level circular turn of radius 49.0 m, as shown in the bird's-eye
view in figure a. What minimum coefficient of static friction,
μs, between the tires and the roadway
will allow the car to make the circular turn without sliding?
B) At what maximum speed can a car negotiate a turn on a wet
road with coefficient of static friction 0.215without sliding out
of control?...
A car traveling with constant speed travels 150 km in 7200 s. What is the speed of the car?
A car traveling with constant speed travels 150 km in 7200 s. What is the speed of the car? Express the speed with the appropriate units.
Consider a car traveling on a highway. If the car travels 100 miles in 2 hours,...
Consider a car traveling on a highway. If the car travels 100
miles in 2 hours, which theorem guarantees that
the car must have been traveling at 50 mph at some point in those
two hours? (You may assume position and velocity are continuous and
differentiable)
A 1100-kg car travels at 26 m/s and then quickly stops in 3.4 s to avoid...
A 1100-kg car travels at 26
m/s and then quickly stops in 3.4 s to
avoid an obstacle.
What is the initial speed of the car in
mph?
mph
Tries 0/2
What is the initial kinetic energy of the car in
kilojoules (kJ)?
kJ
Tries 0/2
What is the initial momentum of the car?
kg*m/s
Tries 0/2
What is the magnitude of the
impulse necessary to stop the car?
kg*m/s
Tries 0/2
What is the magnitude of the average
force...
A car starts from rest and travels east with an acceleration of 4x10^-3 m/s^2. Another car...
A
car starts from rest and travels east with an acceleration of
4x10^-3 m/s^2. Another car travels towards west at a constant speed
of 70kph. The two cars are 100km apart.
a. What is the time it takes for the two cars to meet
b. time it takes for them to be 100km apart for the second
time
A truck travels uphill with constant velocity on a highway with a 7.5° slope. A 30-kg...
A truck travels uphill with constant velocity on a highway with
a 7.5° slope. A 30-kg package sits on the floor of the back of the
truck and does not slide, due to a static frictional force. During
an interval in which the truck travels 405 m, find the
following.
(a) What is the net work done on the package? (J)
(b) What is the work done on the package by the force of gravity?
(J)
(c) What is the...
5a) A 5-kg object travels at a constant velocity of 25 m/s east on a smooth,...
5a) A 5-kg object travels at a constant velocity of 25 m/s east
on a smooth, frictionless surface. An 8-kg object travels at a
constant velocity of 55 m/s west on the same surface and then
collides directly with the 5 kg-object. The two objects stick
together. What is the velocity of the two-object system, just after
they collide and stick together?
b) After a .20 kg street-hockey puck is hit, it has an initial
velocity of 35 m/s and...
If a car travels at a 20 m/s, how long must it travel before its clock...
If a car travels at a 20 m/s, how long must it travel before its
clock loses 1.0 second due to time dilation?
A motorcycle is following a car that is traveling at constant speed on a straight highway....
A motorcycle is following a car that is traveling at constant
speed on a straight highway. Initially, the car and the motorcycle
are both traveling at the same speed of 21.5 m/s , and the distance
between them is 60.0 m . After t1 = 5.00 s , the motorcycle starts
to accelerate at a rate of 8.00 m/s2 . The motorcycle catches up
with the car at some time t2.
How long does it take from the moment when...
A motorcycle is following a car that is traveling at constant speed on a straight highway....
A motorcycle is following a car that is traveling at constant
speed on a straight highway. Initially, the car and the motorcycle
are both traveling at the same speed of 21.0 m/s , and the distance
between them is 60.0 m . After t1 = 4.00 s , the
motorcycle starts to accelerate at a rate of 7.00 m/s2 . The
motorcycle catches up with the car at some time t2.
B) How long does it take from the moment...
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