The position y of a particle moving along the y axis depends on the time t according to the equation y = at - bt2.The dimensions of the quantities a and b are respectively:

A) L2/T, L3/T2 B) L/T2, L2/T C) L/T, L/T2 D) L3/T, T2/L E) none of these A) L2/T, L3/T2 B) L/T2, L2/T C) L/T, L/T2 D) L3/T, T2/L E) none of these

Over a short interval, starting at time t = 0, the coordinate of an automobile in meters is given by x(t)= 27t - 4.0t3, where t is in seconds.The magnitudes of the initial (at t = 0)velocity and acceleration of the auto respectively are:

A) 0 m/s; 12 m/s2 B) 0 m/s; 24 m/s2 C) 27 m/s; 0 m/s2 D) 27 m/s; 12 m/s2 E) 27 m/s; 24 m/s2 A) 0 m/s; 12 m/s2 B) 0 m/s; 24 m/s2 C) 27 m/s; 0 m/s2 D) 27 m/s; 12 m/s2 E) 27 m/s; 24 m/s2

The coordinate of an object is given as a function of time by x = 7t - 3t2, where x is in meters and t is in seconds.Its average velocity over the interval from t = 0 to t = 2 s is:

A) 5 m/s B) -5 m/s C) 11 m/s D) -11 m/s E) 1 m/s A) 5 m/s B) -5 m/s C) 11 m/s D) -11 m/s E) 1 m/s

An object is thrown straight up from ground level with a speed of 50 m/s.If g = 10 m/s2 its distance above ground level 1.0 second later is:

A) 40 m B) 45 m C) 50 m D) 55 m E) 60 m A) 40 m B) 45 m C) 50 m D) 55 m E) 60 m

A freely falling body has a constant acceleration of 9.8 m/s2.This means that:

A) the body falls 9.8 m during each second B) the body falls 9.8 m during the first second C) the speed of the body increases by 9.8 m/s during each second D) the acceleration of the body increases by 9.8 m/s2 during each second E) the acceleration of the body decreases by 9.8 m/s2 during each second A) the body falls 9.8 m during each second B) the body falls 9.8 m during the first second C) the speed of the body increases by 9.8 m/s during each second D) the acceleration of the body increases by 9.8 m/s2 during each second E) the acceleration of the body decreases by 9.8 m/s2 during each second

An object starts from rest and has a constant acceleration of 3 m/s2.The position versus time graph for this object has a slope:

A) that increases with time B) that is constant C) that decreases with time D) of 3 m/s E) of 3 m/s2 A) that increases with time B) that is constant C) that decreases with time D) of 3 m/s E) of 3 m/s2

A drag racing car starts from rest at t = 0 and moves along a straight line with velocity given by v = bt2, where b is a constant.The expression for the distance traveled by this car from its position at t = 0 is:

A) bt3 B) bt3/3 C) 4bt2 D) 3bt2 E) bt3/2 A) bt3 B) bt3/3 C) 4bt2 D) 3bt2 E) bt3/2

At time t = 0 a car has a velocity of 16 m/s.It slows down with an acceleration given by a = -0.50t, in m/s2 for t in seconds.At the end of 4.0 s it has traveled:

A) 0 B) 12 m C) 14 m D) 25 m E) 59 m A) 0 B) 12 m C) 14 m D) 25 m E) 59 m

An object dropped from a window of a tall building hits the ground in 12.0 s.If its acceleration is 9.80 m/s2, the height of the window above the ground is (you may neglect air resistance):

A) 29.4 m B) 58.8 m C) 118 m D) 353 m E) 706 m A) 29.4 m B) 58.8 m C) 118 m D) 353 m E) 706 m

An object is thrown vertically upward at 35 m/s.Taking g = 10 m/s2, the velocity of the object 5 seconds later is:

A) 7.0 m/s up B) 15 m/s down C) 15 m/s up D) 85 m/s down E) 85 m/s up A) 7.0 m/s up B) 15 m/s down C) 15 m/s up D) 85 m/s down E) 85 m/s up

The coordinate of an object is given as a function of time by x = 7t - 3t2, where x is in meters and t is in seconds.Its velocity at t = 3s is:

A) -6 m/s B) -11 m/s C) -21 m/s D) 9 m/s E) 18 m/s A) -6 m/s B) -11 m/s C) -21 m/s D) 9 m/s E) 18 m/s

Exam 2: Motion Along a Straight Line

Explore all topics

The position y of a particle moving along the y axis depends on the time t according to the equation y = at - bt².The dimensions of the quantities a and b are respectively:

(Multiple Choice)

4.8/5

(71)

Question 21

At a location where g = 9.80 m/s², an object is thrown vertically down with an initial speed of 1.00 m/s.After 5.00 s the object will have traveled:

(Multiple Choice)

4.9/5

(68)

Question 22

An object is thrown vertically into the air.Which of the following five graphs represents the velocity (v)of the object as a function of the time (t)? The positive direction is taken to be upward.

(Multiple Choice)

4.9/5

(74)

Question 23

Over a short interval, starting at time t = 0, the coordinate of an automobile in meters is given by x(t)= 27t - 4.0t³, where t is in seconds.The magnitudes of the initial (at t = 0)velocity and acceleration of the auto respectively are:

(Multiple Choice)

5.0/5

(75)

Question 24

An object starts from rest at the origin and moves along the x axis with a constant acceleration of 4 m/s².Its average velocity as it goes from x = 2 m to x = 8 m is:

(Multiple Choice)

4.8/5

(85)

Question 25

The coordinate of an object is given as a function of time by x = 7t - 3t², where x is in meters and t is in seconds.Its average velocity over the interval from t = 0 to t = 2 s is:

(Multiple Choice)

4.8/5

(92)

Question 26

A racing car traveling with constant acceleration increases its speed from 10 m/s to 30 m/s over a distance of 60 m? How long does this take?

(Multiple Choice)

4.9/5

(68)

Question 27

An object is thrown straight up from ground level with a speed of 50 m/s.If g = 10 m/s² its distance above ground level 1.0 second later is:

(Multiple Choice)

4.8/5

(80)

Question 28

A freely falling body has a constant acceleration of 9.8 m/s².This means that:

(Multiple Choice)

4.9/5

(92)

Question 29

An elevator is moving upward with constant acceleration.The dashed curve shows the position y of the ceiling of the elevator as a function of the time t.At the instant indicated by the dot, a bolt breaks loose and drops from the ceiling.Which curve best represents the position of the bolt as a function of time?

(Multiple Choice)

4.9/5

(73)

Question 30

An object starts from rest and has a constant acceleration of 3 m/s².The position versus time graph for this object has a slope:

(Multiple Choice)

4.9/5

(75)

Question 31

Neglecting the effect of air resistance, a stone dropped off a 175-m high building lands on the ground in:

(Multiple Choice)

4.8/5

(80)

Question 32

A stone is released from rest from the edge of a building roof 190 m above the ground.Neglecting air resistance, the speed of the stone, just before striking the ground, is:

(Multiple Choice)

4.9/5

(82)

Question 33

A drag racing car starts from rest at t = 0 and moves along a straight line with velocity given by v = bt², where b is a constant.The expression for the distance traveled by this car from its position at t = 0 is:

(Multiple Choice)

4.8/5

(83)

Question 34

At time t = 0 a car has a velocity of 16 m/s.It slows down with an acceleration given by a = -0.50t, in m/s² for t in seconds.At the end of 4.0 s it has traveled:

(Multiple Choice)

5.0/5

(77)

Question 35

An object dropped from a window of a tall building hits the ground in 12.0 s.If its acceleration is 9.80 m/s², the height of the window above the ground is (you may neglect air resistance):

(Multiple Choice)

4.8/5

(72)

Question 36

All falling objects experience some air resistance, the effect of which is to decrease acceleration.When the falling object's acceleration reaches zero, the acceleration stops changing.Therefore, if you drop an object and it falls far enough for this to happen,

(Multiple Choice)

4.9/5

(70)

Question 37

An object is thrown vertically upward at 35 m/s.Taking g = 10 m/s², the velocity of the object 5 seconds later is:

(Multiple Choice)

4.8/5

(79)

Question 38

This graph shows the velocity of a particle as a function of time.During what interval is its displacement negative?

(Multiple Choice)

4.8/5

(74)

Question 39

The coordinate of an object is given as a function of time by x = 7t - 3t², where x is in meters and t is in seconds.Its velocity at t = 3s is:

(Multiple Choice)

4.9/5

(78)

Question 40

Showing 21 - 40 of 90

Exam 2: Motion Along a Straight Line

The position y of a particle moving along the y axis depends on the time t according to the equation y = at - bt2.The dimensions of the quantities a and b are respectively:

At a location where g = 9.80 m/s2, an object is thrown vertically down with an initial speed of 1.00 m/s.After 5.00 s the object will have traveled:

An object is thrown vertically into the air.Which of the following five graphs represents the velocity (v)of the object as a function of the time (t)? The positive direction is taken to be upward.

Over a short interval, starting at time t = 0, the coordinate of an automobile in meters is given by x(t)= 27t - 4.0t3, where t is in seconds.The magnitudes of the initial (at t = 0)velocity and acceleration of the auto respectively are:

An object starts from rest at the origin and moves along the x axis with a constant acceleration of 4 m/s2.Its average velocity as it goes from x = 2 m to x = 8 m is:

The coordinate of an object is given as a function of time by x = 7t - 3t2, where x is in meters and t is in seconds.Its average velocity over the interval from t = 0 to t = 2 s is:

A racing car traveling with constant acceleration increases its speed from 10 m/s to 30 m/s over a distance of 60 m? How long does this take?

An object is thrown straight up from ground level with a speed of 50 m/s.If g = 10 m/s2 its distance above ground level 1.0 second later is:

A freely falling body has a constant acceleration of 9.8 m/s2.This means that:

An object starts from rest and has a constant acceleration of 3 m/s2.The position versus time graph for this object has a slope:

Neglecting the effect of air resistance, a stone dropped off a 175-m high building lands on the ground in:

A stone is released from rest from the edge of a building roof 190 m above the ground.Neglecting air resistance, the speed of the stone, just before striking the ground, is:

A drag racing car starts from rest at t = 0 and moves along a straight line with velocity given by v = bt2, where b is a constant.The expression for the distance traveled by this car from its position at t = 0 is:

At time t = 0 a car has a velocity of 16 m/s.It slows down with an acceleration given by a = -0.50t, in m/s2 for t in seconds.At the end of 4.0 s it has traveled:

An object dropped from a window of a tall building hits the ground in 12.0 s.If its acceleration is 9.80 m/s2, the height of the window above the ground is (you may neglect air resistance):

All falling objects experience some air resistance, the effect of which is to decrease acceleration.When the falling object's acceleration reaches zero, the acceleration stops changing.Therefore, if you drop an object and it falls far enough for this to happen,

An object is thrown vertically upward at 35 m/s.Taking g = 10 m/s2, the velocity of the object 5 seconds later is:

This graph shows the velocity of a particle as a function of time.During what interval is its displacement negative?

The coordinate of an object is given as a function of time by x = 7t - 3t2, where x is in meters and t is in seconds.Its velocity at t = 3s is:

Measurement

Vector

Motion in Two and Three Dimensions

Force and Motion I

Force and Motion II

Kinetic Energy and Work

Potential Energy and Conservation of Energy

Center of Mass and Linear Momentum

Rotation

Rolling, Torque, and Angular Momentum

Equilibrium and Elasticity

Gravitation

Fluids

Oscillations

Waves I

Waves II

Temperature, Heat, and the First Law of Thermodynamics

The Kinetic Theory of Gases

Entropy and the Second Law of Thermodynamics

Electric Charge

Electric Fields

Gauss Law

Electric Potential

Capacitance

Current and Resistance

Circuits

Magnetic Fields

Magnetic Fields Due to Currents

Induction and Inductance

Electromagnetic Oscillations and Alternating Current

Maxwells Equations; Magnetism of Matter

Electromagnetic Waves

Images

Interference

Diffraction

Relativity

Photons and Matter Waves

More About Matter Waves

All About Atoms

Conduction of Electricity in Solids

Nuclear Physics

Energy From the Nucleus

Quarks, Leptons, and the Big Bang

Filters

The position y of a particle moving along the y axis depends on the time t according to the equation y = at - bt².The dimensions of the quantities a and b are respectively:

At a location where g = 9.80 m/s², an object is thrown vertically down with an initial speed of 1.00 m/s.After 5.00 s the object will have traveled:

Over a short interval, starting at time t = 0, the coordinate of an automobile in meters is given by x(t)= 27t - 4.0t³, where t is in seconds.The magnitudes of the initial (at t = 0)velocity and acceleration of the auto respectively are:

An object starts from rest at the origin and moves along the x axis with a constant acceleration of 4 m/s².Its average velocity as it goes from x = 2 m to x = 8 m is:

The coordinate of an object is given as a function of time by x = 7t - 3t², where x is in meters and t is in seconds.Its average velocity over the interval from t = 0 to t = 2 s is:

An object is thrown straight up from ground level with a speed of 50 m/s.If g = 10 m/s² its distance above ground level 1.0 second later is:

A freely falling body has a constant acceleration of 9.8 m/s².This means that:

An object starts from rest and has a constant acceleration of 3 m/s².The position versus time graph for this object has a slope:

A drag racing car starts from rest at t = 0 and moves along a straight line with velocity given by v = bt², where b is a constant.The expression for the distance traveled by this car from its position at t = 0 is:

At time t = 0 a car has a velocity of 16 m/s.It slows down with an acceleration given by a = -0.50t, in m/s² for t in seconds.At the end of 4.0 s it has traveled:

An object dropped from a window of a tall building hits the ground in 12.0 s.If its acceleration is 9.80 m/s², the height of the window above the ground is (you may neglect air resistance):

An object is thrown vertically upward at 35 m/s.Taking g = 10 m/s², the velocity of the object 5 seconds later is:

The coordinate of an object is given as a function of time by x = 7t - 3t², where x is in meters and t is in seconds.Its velocity at t = 3s is: