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WorksheetsAP Physics - Unit 3
Total questions: 46
Worksheet time: 56mins
Bruno the bat has a mass of 0.58 kg and flies at a speed of 0.8 m/s in circle of radius 0.5 m. What is his acceleration?
0.25 m/s2
1.3 m/s2
1.6 m/s2
0.74 m/s2
An object sliding across a surface will experience ______ friction.
static
potential
kinetic
no
When dealing with circular motion, the time that it takes to make one revolution of the circle is called the:
rotation.
orbit.
period.
segment.
A car moves with a constant speed of 17 m/s on a circular track of 200 m radius. Calculate the acceleration of the vehicle. HINT: a = V2 / R
1.45 m/s2
0.76 m/s2
1.98 m/s2
2.34 m/s2
A pendulum bob is released from rest in a horizontal position with the string taut. Which of the following statements is correct when the pendulum reaches its vertical position at point P?
The tension attained its least value
The tension depends only on the length of the pendulum
The tension depends on the mass and length of the pendulum bob.
The magnitude of tension equals the weight of the pendulum bob
The term centripetal means
circular motion
center accepting
center seeking
center fleeing
A curved groove is place on the top of a level table as shown in the diagram. A ball is pushed in the groove at P so that it leaves at Q. Which picture shows how the ball will move when it leaves the groove at Q?
At the instant shown in the diagram, the car's centripetal acceleration is directed-
toward E
toward N
toward W
clockwise
If a ball is swinging at the end of a rope and the rope is suddenly cut, assuming there is no gravity, what best describes the path it will take?
It will fly in a straight line forward from where it was cut
It will fly in a curved line away from the circle
It will fly inward toward the circle
A toy train moves in a circular track with a velocity of 2.2 m/s, the axis of rotation is 1.8 m. What is its centripetal acceleration?
1.22 m/s2
0.81 m/s2
2.69 m/s2
1.47 m/s2
What is the tangential velocity if the centripetal force is 150 N when a 3 kg toy plane flies in a 2 m radius circle?
10 m/s
100 m/s
225 m/s
15 m/s
A car is doing donuts in a parking lot. It completes 5 circles in 35 seconds. What is the period of rotation, in seconds?
A object is traveling in uniform circular motion. It has a period of 6 seconds. The radius of the circle is 3 meters. What is the tangential velocity, in m/s?
(round to a whole number)
The circumference of a circle is...
2πr
πr
πr2
2πr2
Two riders sit at positions X and Y. Do they have different periods of rotation and why / why not?
No, because they have the same tangential velocity.
No, because they take the same amount of time to complete 1 loop.
Yes, because they have different tangential velocities.
Yes, because they have different masses probably.
Two riders sit at positions X and Y. With every loop, do they travel the same distance?
Yes, since they are on the same ride
No, rider Y travels a greater circumference
Imagine a child on a merry-go-round, spinning as it turns. If the child is holding a ball, then reaches out and releases the ball off the side of the merry-go-round, in what direction will it travel?
Toward the center of the merry-go-round
Directly opposite the center of the merry-go-round
In a straight line tangential to the circular path of the merry-go-round
Around in a circular path identical to how it was traveling prior to release
In what direction does the child feel herself being pulled while on the merry-go-round?
Toward the center of the merry-go-round
Directly opposite to the center of the merry-go-round
Tangentially along the path of the circular motion
None of these
The Gravitron at the local carnival spins around, doing a full loop every 8.0 s. If a rider is against the wall, 6.5 m from the center, what is their tangential velocity?
Let's work this problem step-wise. First, we must identify given values, the desired unknown, and any other unknowns.
8.0 s
T
6.5 m
r
desired unknown
v
other unknown
a
other unknown
F
An Olympic athlete can throw a 2.00 kg discus with a release velocity of 25.7 m/s. If the athlete releases the discus coming out of a circular rotation with the object at 1.01 m from the center of rotation, what force was required to hold the discus through the rotation? Start by matching the known and desired unknown values to their corresponding variables.
2.00 kg
m
25.7 m/s
v
1.01 m
r
desired unknown
F
other unknown
a
The Colossus ferris wheel outside St. Louis, MO has a diameter of 50.3 m and travels a full loop every 35.4 s. What is the centripetal acceleration experienced by the riders on the Colossus? Don't forget your units and sig figs!
(a)
