A runner of mass 61.3 kg starts from rest and accelerates with a constant acceleration of 1.07 m/s2 until she reaches a velocity of 8.1 m/s.She then continues running with this constant velocity.How far has she run (in meters)after 49.1 seconds?

A) 195.88 B) 229.18 C) 268.14 D) 313.72 E) 367.05 A) 195.88 B) 229.18 C) 268.14 D) 313.72 E) 367.05

An Olympic runner starts from rest and accelerates at 2.00 m/s2.Assume constant acceleration for the entire time.How far does he travel in 10.0 s?

A) 100 m B) 500 m C) 1000 m D) 2000 m A) 100 m B) 500 m C) 1000 m D) 2000 m

Exam 2: Motion in a Straight Line

A car starts from rest and travels east for 50 km,stops and travels west for 30 km to finish the trip.What is the displacement (start to finish)of the car during this trip?

(Multiple Choice)

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Question 61

A rock is thrown straight up with a velocity of 9.81 m/s.Its acceleration at the top of the flight is

(Multiple Choice)

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Question 62

A car starts from rest and travels east for 50 km,stops and travels west for 30 km to finish the trip.What is the distance traveled (start to finish)of the car during this trip?

(Multiple Choice)

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Question 63

The figure shows the time dependent velocity of an object.Assuming that the object starts from rest at the origin of the coordinate system,what is the magnitude of the displacement of the object at t = 5 s?

(Multiple Choice)

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Question 64

A car starts from rest and travels east for 50 km,stops and travels west for 30 km to finish the trip.What is the displacement (start to finish)of the car during this trip?

(Multiple Choice)

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Question 65

The driver of a car travels 150 miles to reach his destination.If he travels 60.0 mi/h for 100 miles and 55.0 mi/h for the remaining 50.0 miles,what was his average velocity for the trip?

(Multiple Choice)

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Question 66

A car moving along the x direction has acceleration,a_x that varies with time as shown in the figure.At the moment,t = 0 s,the car is located at x = 12 m and has a velocity of 6 m/s in the positive x direction.What is the displacement of the car between t = 1.0 s and t = 2.0 s?

(Multiple Choice)

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Question 67

A runner of mass 61.3 kg starts from rest and accelerates with a constant acceleration of 1.07 m/s² until she reaches a velocity of 8.1 m/s.She then continues running with this constant velocity.How far has she run (in meters)after 49.1 seconds?

(Multiple Choice)

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Question 68

A ball is dropped from rest from a height h above the ground.Another ball is thrown vertically upwards from the ground at the instant the first ball is released.Determine the initial speed of the second ball if the two balls are to meet at a height h/2 above the ground.

(Multiple Choice)

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Question 69

A particle moves in the one direction,stops,and then heads back in the opposite direction.The position of a particle (in meters)as a function of time is given by x(t)= -3.65 t² + 4.52 t + 7.91.The position of the particle where it stops is

(Multiple Choice)

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Question 70

A car moving along the x direction has acceleration,a_x that varies with time as shown in the figure.At the moment,t = 0 s,the car is located at x = 12 m and has a velocity of 6 m/s in the positive x direction.What is the velocity of the car at t = 4.0 s?

(Multiple Choice)

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Question 71

A fish takes 14 minutes to swim 1 mile up a river.At this point a dam breaks and causes a current of 36 miles per hour to push him 0.6 miles downstream in 1 minute.What is the fish's average velocity for this entire trip?

(Multiple Choice)

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Question 72

A stone is dropped from a height of 20.0 m.How long does it take for it to hit the ground?

(Multiple Choice)

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Question 73

A rocket,speeding along toward Alpha Centauri,has an acceleration a(t)= At².Assume that the rocket began at rest at the Earth (x = 0)at t = 0.Assuming it simply travels in a straight line from Earth to Alpha Centauri (and beyond),what is the ratio of the speed of the rocket when it has passed the star to the speed when it has travelled half the time necessary to reach Alpha Centauri?

(Multiple Choice)

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Question 74

A rocket,speeding along toward Alpha Centauri,has an acceleration a(t)= At².Assume that the rocket began at rest at the Earth (x = 0)at t = 0.Assuming it simply travels in a straight line from Earth to Alpha Centauri (and beyond),what fraction of the trip to Alpha Centauri has the rocket travelled when it has travelled half the time necessary to reach the star?

(Multiple Choice)

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Question 75

Starting from rest,a car accelerates at a rate of +4 m/s² for 3 seconds.The car then travels at a constant speed for 5 seconds.What is the displacement of the car after moving for a total of 8 seconds?

(Multiple Choice)

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Question 76

The graph is of position versus time.Which statement best describes it?

(Multiple Choice)

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Question 77

An object with constant acceleration has velocity of 12 m/s when its position is x = 8 m.At another position x = 16 m,its velocity is 20 m/s.Its acceleration is

(Multiple Choice)

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Question 78

The graph of the position of a DNA molecule (on the vertical axis)vs.time (on the horizontal axis)is a straight line that does not go through the origin and does not have a slope of zero.Which statement is true?

(Multiple Choice)

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Question 79

An Olympic runner starts from rest and accelerates at 2.00 m/s².Assume constant acceleration for the entire time.How far does he travel in 10.0 s?

(Multiple Choice)

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Question 80

Showing 61 - 80 of 81

Exam 2: Motion in a Straight Line

A car starts from rest and travels east for 50 km,stops and travels west for 30 km to finish the trip.What is the displacement (start to finish)of the car during this trip?

A rock is thrown straight up with a velocity of 9.81 m/s.Its acceleration at the top of the flight is

A car starts from rest and travels east for 50 km,stops and travels west for 30 km to finish the trip.What is the distance traveled (start to finish)of the car during this trip?

The figure shows the time dependent velocity of an object.Assuming that the object starts from rest at the origin of the coordinate system,what is the magnitude of the displacement of the object at t = 5 s?

A car starts from rest and travels east for 50 km,stops and travels west for 30 km to finish the trip.What is the displacement (start to finish)of the car during this trip?

The driver of a car travels 150 miles to reach his destination.If he travels 60.0 mi/h for 100 miles and 55.0 mi/h for the remaining 50.0 miles,what was his average velocity for the trip?

A car moving along the x direction has acceleration,ax that varies with time as shown in the figure.At the moment,t = 0 s,the car is located at x = 12 m and has a velocity of 6 m/s in the positive x direction.What is the displacement of the car between t = 1.0 s and t = 2.0 s?

A runner of mass 61.3 kg starts from rest and accelerates with a constant acceleration of 1.07 m/s2 until she reaches a velocity of 8.1 m/s.She then continues running with this constant velocity.How far has she run (in meters)after 49.1 seconds?

A ball is dropped from rest from a height h above the ground.Another ball is thrown vertically upwards from the ground at the instant the first ball is released.Determine the initial speed of the second ball if the two balls are to meet at a height h/2 above the ground.

A particle moves in the one direction,stops,and then heads back in the opposite direction.The position of a particle (in meters)as a function of time is given by x(t)= -3.65 t2 + 4.52 t + 7.91.The position of the particle where it stops is

A car moving along the x direction has acceleration,ax that varies with time as shown in the figure.At the moment,t = 0 s,the car is located at x = 12 m and has a velocity of 6 m/s in the positive x direction.What is the velocity of the car at t = 4.0 s?

A fish takes 14 minutes to swim 1 mile up a river.At this point a dam breaks and causes a current of 36 miles per hour to push him 0.6 miles downstream in 1 minute.What is the fish's average velocity for this entire trip?

A stone is dropped from a height of 20.0 m.How long does it take for it to hit the ground?

Starting from rest,a car accelerates at a rate of +4 m/s2 for 3 seconds.The car then travels at a constant speed for 5 seconds.What is the displacement of the car after moving for a total of 8 seconds?

The graph is of position versus time.Which statement best describes it?

An object with constant acceleration has velocity of 12 m/s when its position is x = 8 m.At another position x = 16 m,its velocity is 20 m/s.Its acceleration is

The graph of the position of a DNA molecule (on the vertical axis)vs.time (on the horizontal axis)is a straight line that does not go through the origin and does not have a slope of zero.Which statement is true?

An Olympic runner starts from rest and accelerates at 2.00 m/s2.Assume constant acceleration for the entire time.How far does he travel in 10.0 s?

Overview

Motion in Two and Three Dimensions

Force

Kinetic Energy, work, and Power

Potential Energy and Energy Conservation

Momentum and Collisions

Systems of Particles and Extended Objects

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Static Equilibrium

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Heat and the First Law of Thermodynamics

Ideal Gases

The Second Law of Thermodynamics

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Electric Fields and Gausss Law

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Current and Resistance

Direct Current Circuits

Magnetism

Magnetic Fields of Moving Charges

Electromagnetic Induction

Alternating Current Circuits

Electromagnetic Waves

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Wave Optics

Relativity

Quantum Physics

Quantum Mechanics

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A car moving along the x direction has acceleration,a_x that varies with time as shown in the figure.At the moment,t = 0 s,the car is located at x = 12 m and has a velocity of 6 m/s in the positive x direction.What is the displacement of the car between t = 1.0 s and t = 2.0 s?

A runner of mass 61.3 kg starts from rest and accelerates with a constant acceleration of 1.07 m/s² until she reaches a velocity of 8.1 m/s.She then continues running with this constant velocity.How far has she run (in meters)after 49.1 seconds?

A particle moves in the one direction,stops,and then heads back in the opposite direction.The position of a particle (in meters)as a function of time is given by x(t)= -3.65 t² + 4.52 t + 7.91.The position of the particle where it stops is

A car moving along the x direction has acceleration,a_x that varies with time as shown in the figure.At the moment,t = 0 s,the car is located at x = 12 m and has a velocity of 6 m/s in the positive x direction.What is the velocity of the car at t = 4.0 s?

Starting from rest,a car accelerates at a rate of +4 m/s² for 3 seconds.The car then travels at a constant speed for 5 seconds.What is the displacement of the car after moving for a total of 8 seconds?

An Olympic runner starts from rest and accelerates at 2.00 m/s².Assume constant acceleration for the entire time.How far does he travel in 10.0 s?