Kinematics, Forces, & Momentum
Rotation
Energy
SHM & Fluids
Graphs
100
The potential energy a 5 kg ball is lifted 12 m above the ground has.
600 J
100
A car tire is initially spinning with an angular speed of 150 rad/s. As the brakes are applied, the tire slows down at a rate of 25 rad/s. How much time does it take the car to stop
6.0s
100
You drop a 5 kg ball from a height of 2 m. Just before it reaches the ground, what type of energy does it have?
Kinetic
100
True or false
More depth equals more pressure
True
100
which graph in figure 3-1 represents an object whose speed is zero?
4
200
The work exerted on a 20 N to push a desk 10 m.
200 J
200
A tetherball is whirled in a horizontal circle above your head. If the string breaks, the ball will follow what type of path of it is observed from above
tangent to the original circular path
200
Truck 2
Ug= 900 N
200
Which of the following is/ are characteristics of simple harmonic motion?
I. The acceleration is constant.
II. The restoring force is proportional to the displacement.
III. The frequency is independent of the amplitude.
II and III only
200
In a speed vs. time graph, a straight line shows that acceleration is
Constant
300
A person has a mass of 24 kg on Earth. What is the persons mass on the Moon (1/6 of Earth's gravity)?
24 Kg
300
Moment of Inertia (I) definition
the tendency of an object to resist changes in motion
-depends on mass and the distribution of mass (radius)
-weight farther away from axis = more "I"
300
What is the kinetic energy of a 90 kg toddler running at 30 m/s
40,500 J
300
The period of a simple pendulum is 2.00 sec. Find the length of the pendulum.
0.993 m
300
The graph in figure 4-3 shows an acceleration of
0.2 m/s*s
400
What determines the strength of gravitational attraction between two objects?
mass and distance
400
A uniform meter stick of mass 0.20 kg is pivoted at the 20 cm mark. Where should one hang a mass of 0.50 kg to balance the stick?
DAILY DOUBLE
36 CM
400
Truck 1 is a 500-kg object traveling at a velocity of 35 m/s, and truck 2, is a 400-kg object traveling at a velocity of 40 m/s. Which object has a larger kinetic energy?
Truck 2
400
A spring with a natural length 40 cm and a spring constant of 400 N/m is hung vertically with a 10 kg mass attached to the end. Assuming the spring's mass is negligible, what will be the final length of the spring when it reaches equilibrium?
65 cm or 0.65 m
400
the displacement x of an object moving along the x-axis is shown above as a function of time t. the acceleration of this object must be
0
500
The Earth pulls downward on a ping-pong ball with a force of 1N. If this is the "action" force, what is the "reaction" force?
The ping-pong ball exerts a force of 1 N on the Earth
500
All points have the same _____ velocity on a wheel, but have different _____ velocities
Angular, Tangential/Linear
500
How fast must a 5-kg cat have to run in order to have a kinetic energy of 170 J?
V=8.2m/s
500
If the Radius of Bubble A is four times greater than Bubble B, what is the ratio of their pressures (A:B)
1:4
500
according to the graph above, during which interval does the cat have the greatest positive velocity?
10.0 - 15.0s