Exam 3: Vectors and Two-Dimensional Motion

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A plane is moving due north,directly towards its destination.Its airspeed is 240 mph.A constant breeze is blowing from west to east at 20 mph.How long will it take for the plane to travel 240 miles north?

(Multiple Choice)

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Question 61

A baseball is thrown by the center fielder (from shoulder level)to home plate where it is caught (on the fly at an equal shoulder level)by the catcher.At what point is the ball's speed at a minimum? (air resistance is negligible)

(Multiple Choice)

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Question 62

The following force vectors act on an object: i)55.0 newtons at 45.0° north of east and ii)25.0 newtons at 30.0° south of east.Which of the following represents the magnitude of the resultant and its angle relative to the easterly direction?

(Multiple Choice)

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Question 63

A baseball leaves the bat with a speed of 43 m/s and an angle of 45° above the horizontal.A 5.0-m-high fence is located at a horizontal distance of 136 m from the point where the ball is struck.Assuming the ball leaves the bat 1.0 m above ground level,by how much does the ball clear the fence?

(Multiple Choice)

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Question 64

The highest mountain on Mars is Olympus Mons,rising 22 000 meters above the Martian surface.If we were to throw an object horizontally off the mountain top,how long would it take to reach the surface? (Ignore atmospheric drag forces and use g_Mars = 3.72 m/s². )

(Multiple Choice)

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Question 65

The first displacement is 8 m,and the second displacement is 4 m.They cannot add together to give a total displacement of:

(Multiple Choice)

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Question 66

In a 2-dimensional Cartesian coordinate system the x-component of a given vector is equal to that vector's magnitude multiplied by which trigonometric function,with respect to the angle between vector and x-axis?

(Multiple Choice)

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Question 67

Which type of quantity is characterized by both magnitude and direction?

(Multiple Choice)

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Question 68

An object,initially moving in the negative x-direction,is subjected to a change in velocity in the positive y-direction.If the resulting velocity vector is drawn from the origin,into which quadrant does this vector point?

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Question 69

Jack pulls a sled across a level field by exerting a force of 110 N at an angle of 30° with the ground.What are the parallel and perpendicular components,respectively,of this force with respect to the ground?

(Multiple Choice)

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Question 70

Superguy is flying at treetop level near Paris when he sees the Eiffel Tower elevator start to fall (the cable snapped).His x-ray vision tells him Lois LaTour is inside.If Superguy is 1.4 km away from the tower,and the elevator falls from a height of 210 m,how long does Superguy have to save Lois,and what must be his average speed?

(Multiple Choice)

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Question 71

A track star in the broad jump goes into the jump at 12 m/s and launches himself at 20° above the horizontal.How long is he in the air before returning to Earth? (g = 9.8 m/s²)

(Multiple Choice)

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Question 72

An object moves at a constant velocity of 16 m/s to the southwest for an interval of 30 s.Halfway through this interval,what is the magnitude of its instantaneous velocity?

(Multiple Choice)

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Question 73

Vectors,,andHave magnitudes 8,13,and 22.When these vectors are added,what is the least possible magnitude of their resultant?

(Multiple Choice)

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Question 74

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Exam 3: Vectors and Two-Dimensional Motion

A plane is moving due north,directly towards its destination.Its airspeed is 240 mph.A constant breeze is blowing from west to east at 20 mph.How long will it take for the plane to travel 240 miles north? ​

A baseball is thrown by the center fielder (from shoulder level)to home plate where it is caught (on the fly at an equal shoulder level)by the catcher.At what point is the ball's speed at a minimum? (air resistance is negligible)

The following force vectors act on an object: i)55.0 newtons at 45.0° north of east and ii)25.0 newtons at 30.0° south of east.Which of the following represents the magnitude of the resultant and its angle relative to the easterly direction? ​

A baseball leaves the bat with a speed of 43 m/s and an angle of 45° above the horizontal.A 5.0-m-high fence is located at a horizontal distance of 136 m from the point where the ball is struck.Assuming the ball leaves the bat 1.0 m above ground level,by how much does the ball clear the fence? ​

The highest mountain on Mars is Olympus Mons,rising 22 000 meters above the Martian surface.If we were to throw an object horizontally off the mountain top,how long would it take to reach the surface? (Ignore atmospheric drag forces and use gMars = 3.72 m/s2. )

The first displacement is 8 m,and the second displacement is 4 m.They cannot add together to give a total displacement of: ​

In a 2-dimensional Cartesian coordinate system the x-component of a given vector is equal to that vector's magnitude multiplied by which trigonometric function,with respect to the angle between vector and x-axis?

Which type of quantity is characterized by both magnitude and direction?

An object,initially moving in the negative x-direction,is subjected to a change in velocity in the positive y-direction.If the resulting velocity vector is drawn from the origin,into which quadrant does this vector point?

Jack pulls a sled across a level field by exerting a force of 110 N at an angle of 30° with the ground.What are the parallel and perpendicular components,respectively,of this force with respect to the ground?​

A track star in the broad jump goes into the jump at 12 m/s and launches himself at 20° above the horizontal.How long is he in the air before returning to Earth? (g = 9.8 m/s2) ​

An object moves at a constant velocity of 16 m/s to the southwest for an interval of 30 s.Halfway through this interval,what is the magnitude of its instantaneous velocity? ​

Vectors,,andHave magnitudes 8,13,and 22.When these vectors are added,what is the least possible magnitude of their resultant? ​

Introduction

Introduction: Part A

Motion in One Dimension

Motion in One Dimension: Part A

Vectors and Two-Dimensional Motion: Part A

The Laws of Motion

The Laws of Motion: Part A

Energy

Energy: Part A

Momentum and Collisions

Momentum and Collisions: Part A

Rotational Motion and the Law of Gravity

Rotational Motion and the Law of Gravity: Part A

Rotational Equilibrium and Rotational Dynamics

Rotational Equilibrium and Rotational Dynamics: Part A

Solids and Fluids

Solids and Fluids: Part A

Thermal Physics

Thermal Physics: Part A

Energy in Thermal Processes Heat and Internal Energy

Energy in Thermal Processes Heat and Internal Energy: Part A

The Laws of Thermodynamics Work in Thermodynamic Processes

The Laws of Thermodynamics Work in Thermodynamic Processes: Part A

Vibrations and Waves

Vibrations and Waves: Part A

Sound

Sound: Part A

Electric Forces and Electric Fields

Electric Forces and Electric Fields: Part A

Electrical Energy and Capacitance

Electrical Energy and Capacitance: Part A

Current and Resistance Electric Current

Current and Resistance Electric Current: Part A

Direct-Current Circuits Sources of EMF

Direct-Current Circuits Sources of EMF: Part A

Magnetism Magnets

Magnetism Magnets: Part A

Induced Voltages and Inductance

Induced Voltages and Inductance: Part A

Alternating-Current Circuits and Electromagnetic Waves

Alternating-Current Circuits and Electromagnetic Waves: Part A

Reflection and Refraction of Light

Reflection and Refraction of Light: Part A

Mirrors and Lenses

Mirrors and Lenses: Part A

Wave Optics

Wave Optics: Part A

Optical Instruments

Optical Instruments: Part A

Relativity

Relativity: Part A

Quantum Physics Blackbody Radiation and Plancks Hypothesis

Quantum Physics Blackbody Radiation and Plancks Hypothesis: Part A

Atomic Physics

Atomic Physics: Part A

Nuclear Physics

Nuclear Physics: Part A

Nuclear Energy and Elementary Particles

Nuclear Energy and Elementary Particles: Part A

Particle Collisions, Mediating Photons, and Quark Structures: Exploring the Fundamentals of Physics

Filters

A plane is moving due north,directly towards its destination.Its airspeed is 240 mph.A constant breeze is blowing from west to east at 20 mph.How long will it take for the plane to travel 240 miles north?

The following force vectors act on an object: i)55.0 newtons at 45.0° north of east and ii)25.0 newtons at 30.0° south of east.Which of the following represents the magnitude of the resultant and its angle relative to the easterly direction?

A baseball leaves the bat with a speed of 43 m/s and an angle of 45° above the horizontal.A 5.0-m-high fence is located at a horizontal distance of 136 m from the point where the ball is struck.Assuming the ball leaves the bat 1.0 m above ground level,by how much does the ball clear the fence?

The highest mountain on Mars is Olympus Mons,rising 22 000 meters above the Martian surface.If we were to throw an object horizontally off the mountain top,how long would it take to reach the surface? (Ignore atmospheric drag forces and use g_Mars = 3.72 m/s². )

The first displacement is 8 m,and the second displacement is 4 m.They cannot add together to give a total displacement of:

Jack pulls a sled across a level field by exerting a force of 110 N at an angle of 30° with the ground.What are the parallel and perpendicular components,respectively,of this force with respect to the ground?

A track star in the broad jump goes into the jump at 12 m/s and launches himself at 20° above the horizontal.How long is he in the air before returning to Earth? (g = 9.8 m/s²)

An object moves at a constant velocity of 16 m/s to the southwest for an interval of 30 s.Halfway through this interval,what is the magnitude of its instantaneous velocity?

Vectors,,andHave magnitudes 8,13,and 22.When these vectors are added,what is the least possible magnitude of their resultant?