Alexa's hair grows with an average speed of 3.5 × 10-9 m/s.How long does it take her hair to grow 0.30 m? Note: 1 yr = 3.156 × 107 s.

A) 1.9 yr B) 1.3 yr C) 0.37 yr D) 5.4 yr E) 2.7 yr A) 1.9 yr B) 1.3 yr C) 0.37 yr D) 5.4 yr E) 2.7 yr

A train with a constant speed of 16 m/s passes through a town.After leaving the town, the train accelerates at 0.33 m/s2 until it reaches a speed of 35 m/s.How far did the train travel while it was accelerating?

A) 0.029 km B) 0.53 km C) 1.5 km D) 2.3 km E) 3.0 km A) 0.029 km B) 0.53 km C) 1.5 km D) 2.3 km E) 3.0 km

A cheetah is walking at a speed of 1.15 m/s when it observes a gazelle 43.0 m directly ahead.If the cheetah accelerates at 9.25 m/s2, how long does it take the cheetah to reach the gazelle if the gazelle doesn't move?

A) 4.29 s B) 3.67 s C) 3.05 s D) 1.94 s E) 2.93 s A) 4.29 s B) 3.67 s C) 3.05 s D) 1.94 s E) 2.93 s

A car, starting from rest, accelerates in a straight-line path at a constant rate of 2.0 m/s2. How far will the car travel in 12 seconds?

A) 180 m B) 144 m C) 6 m D) 24 m E) 288 m A) 180 m B) 144 m C) 6 m D) 24 m E) 288 m

Exam 2: Kinematics in One Dimension

A car starts from rest and accelerates at a constant rate in a straight line.In the first second the car moves a distance of 2.0 meters.How much additional distance will the car move during the second second of its motion?

(Multiple Choice)

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Question 21

A brick is dropped from rest from a height of 4.9 m.How long does it take the brick to reach the ground?

(Multiple Choice)

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Question 22

2-15 The figure shows the speed as a function of time for an object in free fall near the surface of the earth. The object was dropped from rest in a long evacuated cylinder. -Which one of the following statements best explains why the graph goes through the origin?

(Multiple Choice)

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Question 23

In the process of delivering mail, a postal worker walks 161 m, due east from his truck.He then turns around and walks 194 m, due west from his truck.What is the worker's displacement relative to his truck?

(Multiple Choice)

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Question 24

A ball is dropped from rest from a tower and strikes the ground 110 m below.Approximately how many seconds does it take the ball to strike the ground after being dropped? Neglect air resistance.

(Multiple Choice)

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Question 25

2-9 An object is moving along a straight line in the positive x direction.The graph shows its position from the starting point as a function of time.Various segments of the graph are identified by the letters A, B, C, and D. -What was the instantaneous velocity of the object at the end of the eighth second?

(Multiple Choice)

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Question 26

2-9 An object is moving along a straight line in the positive x direction.The graph shows its position from the starting point as a function of time.Various segments of the graph are identified by the letters A, B, C, and D. -In a race, Marcos runs 1.00 mile in 4.02 min, mounts a bicycle, and rides back to his starting point, which is also the finish line, in 3.02 min.What is the magnitude of Marcos' average velocity for the race?

(Multiple Choice)

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Question 27

Alexa's hair grows with an average speed of 3.5 × 10^-⁹m/s.How long does it take her hair to grow 0.30 m? Note: 1 yr = 3.156 × 10⁷s.

(Multiple Choice)

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Question 28

A car travels in a straight line covering a total distance of 90.0 miles in 60.0 minutes.Which one of the following statements concerning this situation is necessarily true?

(Multiple Choice)

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Question 29

A train with a constant speed of 16 m/s passes through a town.After leaving the town, the train accelerates at 0.33 m/s² until it reaches a speed of 35 m/s.How far did the train travel while it was accelerating?

(Multiple Choice)

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Question 30

2-10 A automotive test driver travels due north in a prototype hybrid vehicle at 30 mi/h for 2 hours.She then reverses her direction and travels due south at 60 mi/h for 1 hour. -What is the average speed of the vehicle?

(Multiple Choice)

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Question 31

2-5 A tennis ball is shot vertically upward in an evacuated chamber inside a tower with an initial speed of 20.0 m/s at time t = 0 s. -How high does the ball rise?

(Multiple Choice)

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Question 32

2-8 An object is moving along a straight line.The graph shows the object's velocity as a function of time. -During which interval(s) of the graph does the speed of the object increase by equal amounts in equal times?

(Multiple Choice)

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Question 33

A cheetah is walking at a speed of 1.15 m/s when it observes a gazelle 43.0 m directly ahead.If the cheetah accelerates at 9.25 m/s², how long does it take the cheetah to reach the gazelle if the gazelle doesn't move?

(Multiple Choice)

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Question 34

At which time or times does the object reverse its direction of motion?

(Multiple Choice)

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Question 35

2-9 An object is moving along a straight line in the positive x direction.The graph shows its position from the starting point as a function of time.Various segments of the graph are identified by the letters A, B, C, and D. -The rate at which the acceleration of an object changes with time is called a jerk.What is the dimension of the jerk?

(Multiple Choice)

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Question 36

In which segment or segments of the graph does the object have the highest speed?

(Multiple Choice)

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Question 37

What is the magnitude of the acceleration of the ball when it is at its highest point?

(Multiple Choice)

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Question 38

Water drips from rest from a leaf that is 15 meters above the ground.Neglecting air resistance, what is the speed of each water drop when it hits the ground?

(Multiple Choice)

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Question 39

A car, starting from rest, accelerates in a straight-line path at a constant rate of 2.0 m/s². How far will the car travel in 12 seconds?

(Multiple Choice)

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Question 40

Showing 21 - 40 of 103

Exam 2: Kinematics in One Dimension

A car starts from rest and accelerates at a constant rate in a straight line.In the first second the car moves a distance of 2.0 meters.How much additional distance will the car move during the second second of its motion?

A brick is dropped from rest from a height of 4.9 m.How long does it take the brick to reach the ground?

2-15 The figure shows the speed as a function of time for an object in free fall near the surface of the earth. The object was dropped from rest in a long evacuated cylinder. -Which one of the following statements best explains why the graph goes through the origin?

In the process of delivering mail, a postal worker walks 161 m, due east from his truck.He then turns around and walks 194 m, due west from his truck.What is the worker's displacement relative to his truck?

A ball is dropped from rest from a tower and strikes the ground 110 m below.Approximately how many seconds does it take the ball to strike the ground after being dropped? Neglect air resistance.

Alexa's hair grows with an average speed of 3.5 × 10-9 m/s.How long does it take her hair to grow 0.30 m? Note: 1 yr = 3.156 × 107 s.

A car travels in a straight line covering a total distance of 90.0 miles in 60.0 minutes.Which one of the following statements concerning this situation is necessarily true?

A train with a constant speed of 16 m/s passes through a town.After leaving the town, the train accelerates at 0.33 m/s2 until it reaches a speed of 35 m/s.How far did the train travel while it was accelerating?

2-10 A automotive test driver travels due north in a prototype hybrid vehicle at 30 mi/h for 2 hours.She then reverses her direction and travels due south at 60 mi/h for 1 hour. -What is the average speed of the vehicle?

2-5 A tennis ball is shot vertically upward in an evacuated chamber inside a tower with an initial speed of 20.0 m/s at time t = 0 s. -How high does the ball rise?

2-8 An object is moving along a straight line.The graph shows the object's velocity as a function of time. -During which interval(s) of the graph does the speed of the object increase by equal amounts in equal times?

A cheetah is walking at a speed of 1.15 m/s when it observes a gazelle 43.0 m directly ahead.If the cheetah accelerates at 9.25 m/s2, how long does it take the cheetah to reach the gazelle if the gazelle doesn't move?

At which time or times does the object reverse its direction of motion?

In which segment or segments of the graph does the object have the highest speed?

What is the magnitude of the acceleration of the ball when it is at its highest point?

Water drips from rest from a leaf that is 15 meters above the ground.Neglecting air resistance, what is the speed of each water drop when it hits the ground?

A car, starting from rest, accelerates in a straight-line path at a constant rate of 2.0 m/s2. How far will the car travel in 12 seconds?

Introduction and Mathematical Concepts

Kinematics in Two Dimensions

Forces and Newtons Laws of Motion

Dynamics of Uniform Circular Motion

Work and Energy

Impulse and Momentum

Rotational Kinematics

Rotational Dynamics

Simple Harmonic Motion and Elasticity

Fluids

Temperature and Heat

The Transfer of Heat

The Ideal Gas Law and Kinetic Theory

Thermodynamics

Waves and Sound

The Principle of Linear Superposition and Interference Phenomena

Electric Forces and Electric Fields

Electric Potential Energy and the Electric Potential

Electric Circuits

Magnetic Forces and Magnetic Fields

Electromagnetic Induction

Alternating Current Circuits

Electromagnetic Waves

The Reflection of Light: Mirrors

The Refraction of Light: Lenses and Optical Instruments

Interference and the Wave Nature of Light

Special Relativity

Particles and Waves

The Nature of the Atom

Nuclear Physics and Radioactivity

Ionizing Radiation, Nuclear Energy, and Elementary Particles

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Alexa's hair grows with an average speed of 3.5 × 10^-⁹m/s.How long does it take her hair to grow 0.30 m? Note: 1 yr = 3.156 × 10⁷s.

A train with a constant speed of 16 m/s passes through a town.After leaving the town, the train accelerates at 0.33 m/s² until it reaches a speed of 35 m/s.How far did the train travel while it was accelerating?

A cheetah is walking at a speed of 1.15 m/s when it observes a gazelle 43.0 m directly ahead.If the cheetah accelerates at 9.25 m/s², how long does it take the cheetah to reach the gazelle if the gazelle doesn't move?

A car, starting from rest, accelerates in a straight-line path at a constant rate of 2.0 m/s². How far will the car travel in 12 seconds?