Exam 2: Describing Motion: Kinematics in One Dimension

A car is traveling north at 17.7 m/s. After 12 s its velocity is 14.1 m/s in the same direction. Find the magnitude and direction of the car's average acceleration.

An object is moving with constant non-zero velocity in the direction. The position versus time graph of this object is

A ball is projected upward at time t = 0 s, from a point on a flat roof 10 m above the ground. The ball rises and then falls with insignificant air resistance, missing the roof, and strikes the ground. The initial velocity of the ball is 58.5 m/s. Consider all quantities as positive in the upward Direction. At time t = 5.97 s, the vertical velocity of the ball is closest to

An earthquake generates three kinds of waves: surface waves (L-waves), which are the slowest and weakest, shear (S) waves, which are transverse waves and carry most of the energy, and Pressure (P) waves, which are longitudinal waves and are the fastest. The speed of P waves is Approximately 7 km/s, and that of S waves is about 4 km/s. People do not generally feel the P Waves, but animals seem to be sensitive to them. If a person reports that her dog started barking 20 Seconds "before the earthquake," then approximately how far was the origin of the earthquake?

A hydrogen atom consists of a proton and an electron. If the orbital radius of the electron increases, the electric potential energy of the electron due to the proton

The electric potential at a distance of 4 m from a certain point charge is 200 V relative to infinity. What is the potential (relative to infinity) at a distance of 2 m from the same charge?

An object is undergoing simple harmonic motion of amplitude 2.3 m. If the maximum velocity of the object is 10 m/s, what is the object's angular frequency?

An object is thrown upwards with a speed of 13 m/s. How long does it take to reach a height of 4.0 m above the projection point while descending? Neglect air resistance.

An outer metal ring surrounds an inner metal ring, as shown in the figure. The current in the outer ring is counterclockwise and decreasing. What is the direction of the induced current in the inner Ring?

The primary coil of an ideal transformer has 600 turns and its secondary coil has 150 turns. If the current in the primary coil is 2 A, what is the current in its secondary coil?

What is 34 + (3) × (1.2465) written with the correct number of significant figures?

The position x(t) of a particle as a function of time t is given by the equation What is the average velocity of the particle between t=0.30 s and t= 0.40 s?

A car is traveling with a constant speed of 30.0 m/s when the driver suddenly applies the brakes, causing the car to slow down with a constant acceleration. The car comes to a stop in a distance of 120 m. What was the acceleration of the car as it slowed down?

What is the value of written with the correct number of significant figures?

An organ pipe of length L that is open at one end resonates in its third harmonic with a wavelength of 2L/3. Is the other end of the pipe closed or open?

At the same moment, one rock is dropped and one is thrown downward with an initial velocity of 29 m/s from the top of a building that is 300 m tall. How much earlier does the thrown rock strike the ground? Neglect air resistance.

The primary of an ideal transformer has 100 turns and its secondary has 200 turns. If the input current at the primary is 100 A, we can expect the output current at the secondary to be

The motion of a particle is described in the velocity vs. time graph shown in the figure. Over the nine-second interval shown, we can say that the speed of the particle

An ideal gas is compressed isothermally to one-third of its initial volume. The resulting pressure will be

A person stands between two speakers driven by the same source. Each speaker produces a tone with a frequency of 200 Hz on a day when the speed of sound is 330 m/s. The person is 1.65 m From one speaker and 4.95 m from the other. What type of interference does the person perceive?