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1. A car on the Daytona race track travels at 90 m/s (about 200 miles per hour) around a curve with radius 300m.
A. If the track is flat (not banked), what coefficient of friction is needed to keep the car on the track?
Is this practical?
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Physics 201
Section:_
Quiz #2
5 April 2002
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4 pts 1. Find the magnitude and direction of the vector c using vector components given that c = a + b.
The magnitudes of a and b are 5 m.
a_x = 5 cos 30
Name:_
Physics 201
Section:_
Quiz #3
12 April 2002
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5 pts 1. A particle is accelerating on the path drawn below. Draw vectors to represent velocity at points
A and B if the speed at B is twice that at A. U
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Physics 201
Section:_
Quiz #4
26 April 2002
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g = 9.8 m/s^2
1. A block is pushed up a plane by a force (F ) parallel to the plane. The block has a mass of 25 kg, the coefficient of
kinetic friction b
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Physics 201
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Quiz #6
17 May 2002
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y(m)
1. Three masses are placed as shown on the diagram to the left.
A. Find the center of mass in both the x and y directions.
2 pts. x_com = (2kg 1m + 2k
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Physics 201
Section:_
Quiz #5
3 May 2002
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g = 9.8 m/s^2
1. A block is pushed up a frictionless plane by a force (Fp) parallel to the plane. The block has a mass of 25 kg,
the angle between the plane
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Section:_
Physics 201
Quiz #1
21 March 2002
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1. A bicyclist travels at a constant speed of 12 m/s for 3 seconds. He then deaccelerates uniformly for 2 seconds
before coming to rest.
3 pts a. Sketch
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3. A 250 kg block is pulled up a ramp by a cable (see diagram). The coefficient of friction between the block and
ramp is 0.3.
A. Draw a free body diagram for the block.
B. If the block is moving up the ramp at 1.2 m/s what are the magnit
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2. Given the vectors a and b shown to the right, find:
a. The x and y components of a and b.
b. The vector c = 2 a 3 b in unit vector notation.
c. The magnitude of c and its angle relative to the x axis.
d. The dot product a b.
e. The magnitude and
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1. A runaway train passes a second train idling on a side track. The runaway train is travelling at a constant
velocity of 10 m/s. It takes the engineer of the second train 60 seconds after the first train passes to get underway
to chase
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3. A stone thrown from a bridge 20 m above a river has an initial velocity of 12 m/s at an angle of 45 degrees above
the horizon.
a. Find the horizontal distance the stone travels before hitting the water.
b. Find the magnitude and direct
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4. Find the acceleration of block A and the tension in the string. Assume the pulley is massless and frictionless
and that the ramps are frictionless. Start by drawing freebody diagrams for each block showing ALL forces.
A.
T
N_A
F_Agx
B.
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Section:_
2. A block of mass 0.08 kg is released from a height of 30 cm on a frictionless ramp. It slides down the ramp
onto a flat section of length 0.6 m and with coefficient of kinetic friction u=0.4. Finally the block is slowed
down by a spring
ame:_
hysics 201
Section:_
Quiz #7
24 May 2002
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. An 8 kg block moving with a velocity of 6 m/s collides with a 12 kg block initially at rest. The collision is
completely inelastic (i.e. the blocks stick to