A proton moving along the x axis has an initial velocity of 4.0 * 106 m/s and a constant acceleration of 6.0*1012 m/s2.What is the velocity of the proton after it has traveled a distance of 80 cm?

A) 5.1 * 106 m/s B) 6.3 * 106 m/s C) 4.8 * 106 m/s D) 3.9 * 106 m/s E) 2.9 * 106 m/s A) 5.1 * 106 m/s B) 6.3 * 106 m/s C) 4.8 * 106 m/s D) 3.9 * 106 m/s E) 2.9 * 106 m/s A

A particle moving along the x axis has a position given by x = 54t -2.0t3 m.At the time t = 3.0 s,the speed of the particle is zero.Which statement is correct?

A) The particle remains at rest after t = 3.0 s. B) The particle no longer accelerates after t = 3.0 s. C) The particle can be found at positions x < 0 m only when t < 0 s. D) All of the above are correct. E) None of the above is correct. A) The particle remains at rest after t = 3.0 s. B) The particle no longer accelerates after t = 3.0 s. C) The particle can be found at positions x < 0 m only when t < 0 s. D) All of the above are correct. E) None of the above is correct.

Exam 2: Motion in One Dimension

A bullet is fired through a board,14.0 cm thick,with its line of motion perpendicular to the face of the board.If it enters with a speed of 450 m/s and emerges with a speed of 220 m/s,what is the bullet's acceleration as it passes through the board?

Free

(Multiple Choice)

4.9/5

(37)

Question 1

Correct Answer:

Verified

A 50-gram superball traveling at 25.0 m/s is bounced off a brick wall and rebounds at 22.0 m/s.A high-speed camera records this event.If the ball is in contact with the wall for 3.50 ms,what is the average acceleration of the ball during this time interval?

Free

(Short Answer)

4.8/5

(35)

Question 2

Correct Answer:

Verified

13 400 m/s²

A proton moving along the x axis has an initial velocity of 4.0 * 10⁶ m/s and a constant acceleration of 6.0*10¹² m/s².What is the velocity of the proton after it has traveled a distance of 80 cm?

Free

(Multiple Choice)

4.9/5

(29)

Question 3

Correct Answer:

Verified

A juggler throws two balls to the same height so that one is at the halfway point going up when the other is at the halfway point coming down.At that point:

(Multiple Choice)

4.9/5

(36)

Question 4

Driver A is cruising along enjoying the fall colors.Driver B starts her car at the instant he passes her.Their velocities are shown as functions of time in the graph below.At what instants in time on the graph are drivers A and B side by side?

(Multiple Choice)

4.8/5

(49)

Question 5

The position of an object at equal time intervals is shown below: Which graph below correctly represents position versus time for this object?

(Multiple Choice)

4.9/5

(39)

Question 6

A speedy tortoise can run with a velocity of 10.0 cm/s and a hare can run 20.0 times as fast.In a race,they both start at the same time,but the hare stops to rest for 2.00 minutes.The tortoise wins by a shell (20.0 cm).What was the length of the race?

(Short Answer)

4.7/5

(40)

Question 7

The position of a particle moving along the y axis has a position given by $y = 0.20 \mathrm {~m} + \left( 8.0 \frac { \mathrm { m } } { \mathrm { s } } \right) t - \left( 10 \frac { \mathrm { m } } { \mathrm { s } ^ { 2 } } \right) t ^ { 2 }$ Is there any time interval during which the particle is not moving?

(Multiple Choice)

4.9/5

(32)

Question 8

An automobile traveling along a straight road increases its speed from 30.0 m/s to 50.0 m/s in a distance of 180 m.If the acceleration is constant,how much time elapses while the auto moves this distance?

(Multiple Choice)

4.8/5

(34)

Question 9

A helicopter descends from a height of 600 m with uniform negative acceleration,reaching the ground at rest in 5.00 minutes.Determine the acceleration of the helicopter and its initial velocity.

(Short Answer)

4.9/5

(34)

Question 10

Two identical balls are at rest side by side at the bottom of a hill.Some time after ball A is kicked up the hill,ball B is given a kick up the hill.Ball A is headed downhill when it passes ball B headed up the hill.At the instant when ball A passes ball B,

(Multiple Choice)

4.9/5

(40)

Question 11

Five motion diagrams in which points represent the positions of an object at equal time intervals are shown below.Which statement is correct?

(Multiple Choice)

4.9/5

(41)

Question 12

To help Kim practice for the Special Olympics,Sally runs beside him for half the required distance.She runs the remaining distance at her regular speed and arrives 90 seconds ahead of Kim.What is the ratio of Sally's regular speed to Kim's speed? Use t_Kim for Kim's total time.

(Multiple Choice)

4.9/5

(36)

Question 13

A particle moving with a constant acceleration has a velocity of 20 cm/s when its position is x = 10 cm.Its position 7.0 s later is x = -30 cm.What is the acceleration of the particle?

(Multiple Choice)

4.9/5

(24)

Question 14

A bicyclist starts down a hill with an initial speed of 2.0 m/s.She moves down the hill with a constant acceleration,arriving at the bottom of the hill with a speed of 8.0 m/s.If the hill is 12 m long,how long did it take the bicyclist to travel down the hill?

(Short Answer)

4.8/5

(37)

Question 15

The area under a graph of v_x vs.t from t = t_i to t = t_f represents

(Multiple Choice)

4.8/5

(30)

Question 16

A peregrine falcon dives at a pigeon.The falcon starts with zero downward velocity and falls with the acceleration of gravity.If the pigeon is 76.0 m below the initial height of the falcon,how long does it take the falcon to intercept the pigeon?

(Short Answer)

4.7/5

(40)

Question 17

A particle confined to motion along the x axis moves with constant acceleration from x = 2.0 m to x = 8.0 m during a 2.5-s time interval.The velocity of the particle at x = 8.0 m is 2.8 m/s.What is the acceleration during this time interval?

(Multiple Choice)

4.9/5

(36)

Question 18

A particle moving along the x axis has a position given by x = 54t -2.0t³ m.At the time t = 3.0 s,the speed of the particle is zero.Which statement is correct?

(Multiple Choice)

4.8/5

(23)

Question 19

The velocity at the midway point of a ball able to reach a height y when thrown with velocity v_i at the origin is:

(Multiple Choice)

4.9/5

(36)

Question 20

Showing 1 - 20 of 55

Exam 2: Motion in One Dimension

A bullet is fired through a board,14.0 cm thick,with its line of motion perpendicular to the face of the board.If it enters with a speed of 450 m/s and emerges with a speed of 220 m/s,what is the bullet's acceleration as it passes through the board?

A 50-gram superball traveling at 25.0 m/s is bounced off a brick wall and rebounds at 22.0 m/s.A high-speed camera records this event.If the ball is in contact with the wall for 3.50 ms,what is the average acceleration of the ball during this time interval?

A proton moving along the x axis has an initial velocity of 4.0 * 106 m/s and a constant acceleration of 6.0*1012 m/s2.What is the velocity of the proton after it has traveled a distance of 80 cm?

A juggler throws two balls to the same height so that one is at the halfway point going up when the other is at the halfway point coming down.At that point:

Driver A is cruising along enjoying the fall colors.Driver B starts her car at the instant he passes her.Their velocities are shown as functions of time in the graph below.At what instants in time on the graph are drivers A and B side by side?

The position of an object at equal time intervals is shown below: Which graph below correctly represents position versus time for this object?

A speedy tortoise can run with a velocity of 10.0 cm/s and a hare can run 20.0 times as fast.In a race,they both start at the same time,but the hare stops to rest for 2.00 minutes.The tortoise wins by a shell (20.0 cm).What was the length of the race?

An automobile traveling along a straight road increases its speed from 30.0 m/s to 50.0 m/s in a distance of 180 m.If the acceleration is constant,how much time elapses while the auto moves this distance?

A helicopter descends from a height of 600 m with uniform negative acceleration,reaching the ground at rest in 5.00 minutes.Determine the acceleration of the helicopter and its initial velocity.

Two identical balls are at rest side by side at the bottom of a hill.Some time after ball A is kicked up the hill,ball B is given a kick up the hill.Ball A is headed downhill when it passes ball B headed up the hill.At the instant when ball A passes ball B,

Five motion diagrams in which points represent the positions of an object at equal time intervals are shown below.Which statement is correct?

To help Kim practice for the Special Olympics,Sally runs beside him for half the required distance.She runs the remaining distance at her regular speed and arrives 90 seconds ahead of Kim.What is the ratio of Sally's regular speed to Kim's speed? Use tKim for Kim's total time.

A particle moving with a constant acceleration has a velocity of 20 cm/s when its position is x = 10 cm.Its position 7.0 s later is x = -30 cm.What is the acceleration of the particle?

A bicyclist starts down a hill with an initial speed of 2.0 m/s.She moves down the hill with a constant acceleration,arriving at the bottom of the hill with a speed of 8.0 m/s.If the hill is 12 m long,how long did it take the bicyclist to travel down the hill?

The area under a graph of vx vs.t from t = ti to t = tf represents

A peregrine falcon dives at a pigeon.The falcon starts with zero downward velocity and falls with the acceleration of gravity.If the pigeon is 76.0 m below the initial height of the falcon,how long does it take the falcon to intercept the pigeon?

A particle confined to motion along the x axis moves with constant acceleration from x = 2.0 m to x = 8.0 m during a 2.5-s time interval.The velocity of the particle at x = 8.0 m is 2.8 m/s.What is the acceleration during this time interval?

A particle moving along the x axis has a position given by x = 54t -2.0t3 m.At the time t = 3.0 s,the speed of the particle is zero.Which statement is correct?

The velocity at the midway point of a ball able to reach a height y when thrown with velocity vi at the origin is:

Introduction and Vectors

Motion in Two Dimensions

The Laws of Motion

More Applications of Newtons Laws

Energy of a System

Conservation of Energy

Momentum and Collisions

Relativity

Rotational Motion

Gravity,planetary Orbits,and the Hydrogen Atom

Oscillatory Motion

Mechanical Waves

Superposition and Standing Waves

Fluid Mechanics

Temperature and the Kinetic Theory of Gases

Energy in Thermal Processes: the First Law of Thermodynamics

Heat Engines,entropy,and the Second Law of Thermodynamics

Electric Forces and Electric Fields

Electric Potential and Capacitance

Current and Direct Current Circuits

Magnetic Forces and Magnetic Fields

Faradays Law and Inductance

Electromagnetic Waves

Reflection and Refraction of Light

Image Formation by Mirrors and Lenses

Wave Optics

Quantum Physics

Atomic Physics

Nuclear Physics

Particle Physics

Filters

A proton moving along the x axis has an initial velocity of 4.0 * 10⁶ m/s and a constant acceleration of 6.0*10¹² m/s².What is the velocity of the proton after it has traveled a distance of 80 cm?

To help Kim practice for the Special Olympics,Sally runs beside him for half the required distance.She runs the remaining distance at her regular speed and arrives 90 seconds ahead of Kim.What is the ratio of Sally's regular speed to Kim's speed? Use t_Kim for Kim's total time.

The area under a graph of v_x vs.t from t = t_i to t = t_f represents

A particle moving along the x axis has a position given by x = 54t -2.0t³ m.At the time t = 3.0 s,the speed of the particle is zero.Which statement is correct?

The velocity at the midway point of a ball able to reach a height y when thrown with velocity v_i at the origin is: