A boat is traveling at 4.0 m/s as it passes the starting line of a race. If the boat accelerates at 2.0 m/s2 for 3.0 seconds, in the same direction as the velocity, then the magnitude of the velocity of the boat after the 3.0 seconds is

A) 21 m/s. B) 9.0 m/s. C) 13 m/s. D) 10 m/s. E) 4.0 m/s. A) 21 m/s. B) 9.0 m/s. C) 13 m/s. D) 10 m/s. E) 4.0 m/s.

A runner starts from rest and with an acceleration of 2.0 m/s2 travels a distance of 12 meters. The magnitude of the velocity of the runner at the end of the distance is

A) 3.4 m/s. B) 5.7 m/s. C) 6.9 m/s. D) 7.5 m/s. E) 8.1 m/s. A) 3.4 m/s. B) 5.7 m/s. C) 6.9 m/s. D) 7.5 m/s. E) 8.1 m/s.

A car starting from rest travels a distance of 20.0 m with a constant acceleration of 2.0 m/s2. The car then slows to a stop in 10.0 seconds with a constant negative acceleration. The distance traveled by the car is

A) 36 m. B) 46 m. C) 50 m. D) 58 m. E) 65 m. A) 36 m. B) 46 m. C) 50 m. D) 58 m. E) 65 m.

Exam 2: Motion Along a Line

A walker walks 30 m from the origin toward the EAST to point A. She then walks from point A 20 m more toward the EAST to point B. The walker's total displacement from the origin is

(Multiple Choice)

5.0/5

(77)

Question 21

The graph shows v_x versus t for an object moving in a straight line. What is the average speed from t = 0 s to t = 9 s?

(Multiple Choice)

4.9/5

(77)

Question 22

A car starts from rest and travels a distance of 100 m in 10 seconds, with constant acceleration. The magnitude of the acceleration of the car is

(Multiple Choice)

4.8/5

(71)

Question 23

A ball is thrown straight up, reaches a maximum height, then falls to its initial height. As the ball is going up

(Multiple Choice)

4.8/5

(79)

Question 24

If an object is located 20 m to the right of the origin at 1:00 PM, and later the object is located 30 m to the right of the origin at 2:00 PM, then the displacement from 1:00 PM to 2:00 PM is

(Multiple Choice)

4.8/5

(96)

Question 25

A car starts from rest and travels a distance of 100 m in 15 seconds with a constant acceleration. The magnitude of the average velocity of the car for the 15 second interval is

(Multiple Choice)

4.8/5

(65)

Question 26

A runner runs 10 m from the origin toward the WEST to point A. He then runs from point A 20 m more toward the WEST to point B. He then runs from point B 30 m more toward the WEST to point C. The runner's total displacement from the origin to point C is

(Multiple Choice)

4.9/5

(78)

Question 27

The figure shows the speedometer readings as a car comes to a stop. Solve graphically for the acceleration a_x at t = 7.0 s.

(Multiple Choice)

4.8/5

(75)

Question 28

An object starts from rest and travels in a straight line with an acceleration of 2.0 m/s² for 3.0 seconds. It then reduces its acceleration to 1.0 m/s² for 5.0 additional seconds. The magnitude of the velocity at the end of the 5.0 second interval is

(Multiple Choice)

4.8/5

(80)

Question 29

A boat is traveling at 4.0 m/s as it passes the starting line of a race. If the boat accelerates at 2.0 m/s² for 3.0 seconds, in the same direction as the velocity, then the magnitude of the velocity of the boat after the 3.0 seconds is

(Multiple Choice)

4.8/5

(78)

Question 30

A rock is thrown straight up and reaches a maximum height. Which of the following describes the motion at the maximum height?

(Multiple Choice)

5.0/5

(60)

Question 31

One stone is dropped from the side of a bridge, and a second is dropped from the same place a short time later (while the first stone is still in the air). What is true about the distance between the stones as a function of time after both have been dropped (and before either reaches the ground)? Ignore air resistance.

(Multiple Choice)

5.0/5

(90)

Question 32

The figure is a graph of an object moving in a straight line. Solve graphically to determine which section of the path has the highest speed.

(Multiple Choice)

4.7/5

(73)

Question 33

A ball is dropped at time t = 0.0 s. At t = 2.0 s, a second ball is thrown downward with speed v. What is v if at t = 4.0 s, the two balls are at the same vertical position?

(Multiple Choice)

4.9/5

(81)

Question 34

A runner starts from rest and with an acceleration of 2.0 m/s² travels a distance of 12 meters. The magnitude of the velocity of the runner at the end of the distance is

(Multiple Choice)

4.9/5

(93)

Question 35

Two balls are thrown from the top of a building. One is thrown up and the other is thrown down, both with the same initial speed. Ignoring air resistance, what are their speeds when they hit the street?

(Multiple Choice)

5.0/5

(82)

Question 36

A car starting from rest travels a distance of 20.0 m with a constant acceleration of 2.0 m/s². The car then slows to a stop in 10.0 seconds with a constant negative acceleration. The distance traveled by the car is

(Multiple Choice)

4.8/5

(80)

Question 37

If an object is located 20 m to the right of the origin at 1:00 PM, and later the object is located 30 m to the left of the origin at 2:00 PM, then the displacement from 1:00 PM to 2:00 PM is

(Multiple Choice)

4.8/5

(87)

Question 38

A car travels a distance of 100 km in 2.00 hours. It then travels an additional distance of 60.0 km in 1.00 hour. The average speed of the car for the entire trip is

(Multiple Choice)

4.8/5

(70)

Question 39

Which of the following specifications would allow you to precisely meet someone for an appointment?

(Multiple Choice)

4.8/5

(84)

Question 40

Showing 21 - 40 of 68

Exam 2: Motion Along a Line

A walker walks 30 m from the origin toward the EAST to point A. She then walks from point A 20 m more toward the EAST to point B. The walker's total displacement from the origin is

The graph shows vx versus t for an object moving in a straight line. What is the average speed from t = 0 s to t = 9 s?

A car starts from rest and travels a distance of 100 m in 10 seconds, with constant acceleration. The magnitude of the acceleration of the car is

A ball is thrown straight up, reaches a maximum height, then falls to its initial height. As the ball is going up

If an object is located 20 m to the right of the origin at 1:00 PM, and later the object is located 30 m to the right of the origin at 2:00 PM, then the displacement from 1:00 PM to 2:00 PM is

A car starts from rest and travels a distance of 100 m in 15 seconds with a constant acceleration. The magnitude of the average velocity of the car for the 15 second interval is

A runner runs 10 m from the origin toward the WEST to point A. He then runs from point A 20 m more toward the WEST to point B. He then runs from point B 30 m more toward the WEST to point C. The runner's total displacement from the origin to point C is

The figure shows the speedometer readings as a car comes to a stop. Solve graphically for the acceleration ax at t = 7.0 s.

An object starts from rest and travels in a straight line with an acceleration of 2.0 m/s2 for 3.0 seconds. It then reduces its acceleration to 1.0 m/s2 for 5.0 additional seconds. The magnitude of the velocity at the end of the 5.0 second interval is

A boat is traveling at 4.0 m/s as it passes the starting line of a race. If the boat accelerates at 2.0 m/s2 for 3.0 seconds, in the same direction as the velocity, then the magnitude of the velocity of the boat after the 3.0 seconds is

A rock is thrown straight up and reaches a maximum height. Which of the following describes the motion at the maximum height?

The figure is a graph of an object moving in a straight line. Solve graphically to determine which section of the path has the highest speed.

A ball is dropped at time t = 0.0 s. At t = 2.0 s, a second ball is thrown downward with speed v. What is v if at t = 4.0 s, the two balls are at the same vertical position?

A runner starts from rest and with an acceleration of 2.0 m/s2 travels a distance of 12 meters. The magnitude of the velocity of the runner at the end of the distance is

Two balls are thrown from the top of a building. One is thrown up and the other is thrown down, both with the same initial speed. Ignoring air resistance, what are their speeds when they hit the street?

A car starting from rest travels a distance of 20.0 m with a constant acceleration of 2.0 m/s2. The car then slows to a stop in 10.0 seconds with a constant negative acceleration. The distance traveled by the car is

If an object is located 20 m to the right of the origin at 1:00 PM, and later the object is located 30 m to the left of the origin at 2:00 PM, then the displacement from 1:00 PM to 2:00 PM is

A car travels a distance of 100 km in 2.00 hours. It then travels an additional distance of 60.0 km in 1.00 hour. The average speed of the car for the entire trip is

Which of the following specifications would allow you to precisely meet someone for an appointment?

Introduction

Motion in a Plane

Force and Newtons Laws of Motion

Circular Motion

Conservation of Energy

Linear Momentum

Torque and Angular Momentum

Fluids

Elasticity and Oscillations

Waves

Sound

Temperature and the Ideal Gas

Heat

Thermodynamics

Electric Forces and Fields

Electric Potential

Electric Current and Circuits

Magnetic Forces and Fields

Electromagnetic Induction

Alternating Current

Electromagnetic Waves

Reflection and Refraction of Light

Optical Instruments

Interference and Diffraction

Relativity

Early Quantum Physics and the Photon

Quantum Physics

Nuclear Physics

Particle Physics

Filters

The graph shows v_x versus t for an object moving in a straight line. What is the average speed from t = 0 s to t = 9 s?

The figure shows the speedometer readings as a car comes to a stop. Solve graphically for the acceleration a_x at t = 7.0 s.

An object starts from rest and travels in a straight line with an acceleration of 2.0 m/s² for 3.0 seconds. It then reduces its acceleration to 1.0 m/s² for 5.0 additional seconds. The magnitude of the velocity at the end of the 5.0 second interval is

A boat is traveling at 4.0 m/s as it passes the starting line of a race. If the boat accelerates at 2.0 m/s² for 3.0 seconds, in the same direction as the velocity, then the magnitude of the velocity of the boat after the 3.0 seconds is

A runner starts from rest and with an acceleration of 2.0 m/s² travels a distance of 12 meters. The magnitude of the velocity of the runner at the end of the distance is

A car starting from rest travels a distance of 20.0 m with a constant acceleration of 2.0 m/s². The car then slows to a stop in 10.0 seconds with a constant negative acceleration. The distance traveled by the car is