Question 1

If,in the figure,you start from the Bakery,travel to the Cafe,and then to the Art Gallery
(a)what distance you have traveled?
(b)what is your displacement?

Accepted Answer

(a)10.5 km

Question 2

A train starts from rest and accelerates uniformly until it has traveled 5.6 km and acquired a forward velocity of $42 \mathrm {~m} / \mathrm { s }$ The train then moves at a constant velocity of $42 \mathrm {~m} / \mathrm { s }$ for 420 s.The train then slows down uniformly at $$0.065 \mathrm {~m} / \mathrm { s } ^ { 2 }$$ until it is brought to a halt.The acceleration during the first 5.6 km of travel is closest to which of the following?

Accepted Answer

A) 0.16 m/ $\mathrm { s }^2$ 
B) 0.14 m/ $\mathrm { s }^2$ 
C) 0.17 m/ $\mathrm { s }^2$ 
D) 0.19 m/ $\mathrm { s }^2$ 
E) 0.20 m/ $\mathrm { s }^2$ 
A) 0.16 m/ $\mathrm { s }^2$ 
B) 0.14 m/ $\mathrm { s }^2$ 
C) 0.17 m/ $\mathrm { s }^2$ 
D) 0.19 m/ $\mathrm { s }^2$ 
E) 0.20 m/ $\mathrm { s }^2$

Question 3

An airplane travels at 300 mi/h south for 2.00 h and then at 250 mi/h north for 750 miles.What is the average speed for the trip?

Accepted Answer

A) 260 mi/h 
B) 270 mi/h 
C) 275 mi/h 
D) 280 mi/h 
A) 260 mi/h 
B) 270 mi/h 
C) 275 mi/h 
D) 280 mi/h

Question 4

A car is moving with a speed of 32.0 m/s.The driver sees an accident ahead and slams on the brakes,causing the car to slow down with a uniform acceleration of magnitude 3.50 m/s2.How far does the car travel after the driver put on the brakes until it comes to a stop?

Accepted Answer

A) 4.57 m 
B) 9.14 m 
C) 112 m 
D) 146 m 
E) 292 m 
A) 4.57 m 
B) 9.14 m 
C) 112 m 
D) 146 m 
E) 292 m

Question 5

A car travels at 15 m/s for 10 s.It then speeds up with a constant acceleration of 2.0 m/s2 for 15 s.At the end of this time,what is its velocity?

Accepted Answer

A) 15 m/s 
B) 30 m/s 
C) 45 m/s 
D) 375 m/s 
A) 15 m/s 
B) 30 m/s 
C) 45 m/s 
D) 375 m/s

Question 6

Suppose that a car traveling to the west begins to slow down as it approaches a traffic light.Which of the following statements about its acceleration is correct?

Accepted Answer

A) The acceleration is toward the east. 
B) Since the car is slowing down, its acceleration must be negative. 
C) The acceleration is zero. 
D) The acceleration is toward the west. 
A) The acceleration is toward the east. 
B) Since the car is slowing down, its acceleration must be negative. 
C) The acceleration is zero. 
D) The acceleration is toward the west.

Question 7

A water rocket can reach a speed of 75 m/s in 0.050 seconds from launch.What is its average acceleration?

Accepted Answer

The answer of A water rocket can reach a speed...

Question 8

Arthur and Betty start walking toward each other when they are 100 m apart.Arthur has a speed of 3.0 m/s and Betty has a speed of 2.0 m/s.How long does it take for them to meet?

Accepted Answer

The answer of Arthur and Betty start walking toward each...

Question 9

A car accelerates from $5.0 \mathrm {~m} / \mathrm { s }$ to $21 \mathrm {~m} / \mathrm { s }$ at a constant rate of $3.0 \mathrm {~m} / \mathrm { s } ^ { 2 }$ How far does it travel while accelerating?

Accepted Answer

A) 69 m 
B) 207 m 
C) 41 m 
D) 117 m 
A) 69 m 
B) 207 m 
C) 41 m 
D) 117 m

Question 10

A ball is thrown upward at a velocity of 19.6 m/s.What is its velocity after 3.0 s,assuming no air?

Accepted Answer

A) 9.8 m/s upward 
B) 9.8 m/s downward 
C) 0 m/s 
D) 19.6 m/s downward 
A) 9.8 m/s upward 
B) 9.8 m/s downward 
C) 0 m/s 
D) 19.6 m/s downward

Question 11

A polar bear starts at the North Pole.It travels 1.0 km south,then 1.0 km east,and then 1.0 km north to return to its starting point.This trip takes 45 min.What was the bear's average velocity?

Accepted Answer

A) 0.00 km/h 
B) 0.067 km/h 
C) 4.0 km/h 
D) 5.3 km/h 
A) 0.00 km/h 
B) 0.067 km/h 
C) 4.0 km/h 
D) 5.3 km/h

Question 12

Acceleration is sometimes expressed in multiples of g,where $g = 9.8 \mathrm {~m} / \mathrm { s } ^ { 2 }$ is the acceleration of an object when it is in the state of free fall.In a car crash,the car's forward velocity may go from $29 \mathrm {~m} / \mathrm { s }$ to $0 \mathrm {~m} / \mathrm { s }$ in $0.15 \mathrm {~s}$ How many g's are experienced,on average,by the driver?

Accepted Answer

A) 20 g 
B) 14 g 
C) 24 g 
D) 26 g 
A) 20 g 
B) 14 g 
C) 24 g 
D) 26 g

Question 13

If you run a complete loop around an outdoor track of length 400 m in 100 s,find your
(a)average velocity and (b)average speed.

Accepted Answer

The answer of If you run a complete loop around...

Question 14

Starting from rest,a dragster travels a straight 1/4 mi racetrack in 6.70 s with constant acceleration.What is its velocity when it crosses the finish line?

Accepted Answer

A) 269 mi/h 
B) 188 mi/h 
C) 296 mi/h 
D) 135 mi/h 
A) 269 mi/h 
B) 188 mi/h 
C) 296 mi/h 
D) 135 mi/h

Question 15

The graph in the figure shows the velocity of a particle as it travels along the x-axis.What is the magnitude of the average acceleration of the particle between t = 1.0 s and t = 4.0 s?

Accepted Answer

A) 0.33 m/s2 
B) 1.7 m/s2 
C) 2.0 m/s2 
D) 2.5 m/s2 
E) 3.0 m/s2 
A) 0.33 m/s2 
B) 1.7 m/s2 
C) 2.0 m/s2 
D) 2.5 m/s2 
E) 3.0 m/s2

Question 16

A car starting from rest accelerates at a constant 2.0 m/s2 for 10 s.It then travels with constant speed it has achieved for another 10 s.Then it finally slows to a stop with constant acceleration of magnitude 2.0 m/s2.How far does it travel after starting?

Accepted Answer

A) 200 m 
B) 300 m 
C) 400 m 
D) 500 m 
A) 200 m 
B) 300 m 
C) 400 m 
D) 500 m

Question 17

An object is moving with constant non-zero acceleration in the +x direction.The velocity versus time graph of this object is

Accepted Answer

A) a horizontal straight line. 
B) a vertical straight line. 
C) a straight line making an angle with the time axis. 
D) a parabolic curve. 
A) a horizontal straight line. 
B) a vertical straight line. 
C) a straight line making an angle with the time axis. 
D) a parabolic curve.

Question 18

The motion of a particle is described in the velocity vs.time graph shown in the figure.   Over the nine-second interval shown,we can say that the speed of the particle

Accepted Answer

A) only increases. 
B) only decreases. 
C) increases and then decreases. 
D) decreases and then increases. 
E) remains constant. 
A) only increases. 
B) only decreases. 
C) increases and then decreases. 
D) decreases and then increases. 
E) remains constant.

Question 19

A rock is thrown upward with a speed of 12 m/s on the surface of planet X where the acceleration of objects in free fall is 1.5 m/s2 and there is no atmosphere.How long does it take for the laser to reach the maximum height?

Accepted Answer

A) 8.0 s 
B) 11 s 
C) 14 s 
D) 16 s 
A) 8.0 s 
B) 11 s 
C) 14 s 
D) 16 s

Question 20

An airplane needs to reach a forward velocity of $203.0 \mathrm {~km} / \mathrm { h }$ to take off.On a $2000 - m$ runway,what is the minimum uniform acceleration necessary for the plane to take flight if it starts from rest?

Accepted Answer

A) 0.79 m/s2 
B) 0.87 m/s2 
C) 0.95 m/s2 
D) 1.0 m/s2 
A) 0.79 m/s2 
B) 0.87 m/s2 
C) 0.95 m/s2 
D) 1.0 m/s2

Exam 2: Kinematics: Motion in One Dimension

If,in the figure,you start from the Bakery,travel to the Cafe,and then to the Art Gallery (a)what distance you have traveled? (b)what is your displacement?

An airplane travels at 300 mi/h south for 2.00 h and then at 250 mi/h north for 750 miles.What is the average speed for the trip?

A car is moving with a speed of 32.0 m/s.The driver sees an accident ahead and slams on the brakes,causing the car to slow down with a uniform acceleration of magnitude 3.50 m/s2.How far does the car travel after the driver put on the brakes until it comes to a stop?

A car travels at 15 m/s for 10 s.It then speeds up with a constant acceleration of 2.0 m/s2 for 15 s.At the end of this time,what is its velocity?

Suppose that a car traveling to the west begins to slow down as it approaches a traffic light.Which of the following statements about its acceleration is correct?

A water rocket can reach a speed of 75 m/s in 0.050 seconds from launch.What is its average acceleration?

Arthur and Betty start walking toward each other when they are 100 m apart.Arthur has a speed of 3.0 m/s and Betty has a speed of 2.0 m/s.How long does it take for them to meet?

A car accelerates from 5.0 m/s5.0 \mathrm {~m} / \mathrm { s }5.0 m/s to 21 m/s21 \mathrm {~m} / \mathrm { s }21 m/s at a constant rate of 3.0 m/s23.0 \mathrm {~m} / \mathrm { s } ^ { 2 }3.0 m/s2 How far does it travel while accelerating?

A ball is thrown upward at a velocity of 19.6 m/s.What is its velocity after 3.0 s,assuming no air?

A polar bear starts at the North Pole.It travels 1.0 km south,then 1.0 km east,and then 1.0 km north to return to its starting point.This trip takes 45 min.What was the bear's average velocity?

If you run a complete loop around an outdoor track of length 400 m in 100 s,find your (a)average velocity and (b)average speed.

Starting from rest,a dragster travels a straight 1/4 mi racetrack in 6.70 s with constant acceleration.What is its velocity when it crosses the finish line?

The graph in the figure shows the velocity of a particle as it travels along the x-axis.What is the magnitude of the average acceleration of the particle between t = 1.0 s and t = 4.0 s?

A car starting from rest accelerates at a constant 2.0 m/s2 for 10 s.It then travels with constant speed it has achieved for another 10 s.Then it finally slows to a stop with constant acceleration of magnitude 2.0 m/s2.How far does it travel after starting?

An object is moving with constant non-zero acceleration in the +x direction.The velocity versus time graph of this object is

The motion of a particle is described in the velocity vs.time graph shown in the figure. Over the nine-second interval shown,we can say that the speed of the particle

A rock is thrown upward with a speed of 12 m/s on the surface of planet X where the acceleration of objects in free fall is 1.5 m/s2 and there is no atmosphere.How long does it take for the laser to reach the maximum height?

An airplane needs to reach a forward velocity of 203.0 km/h203.0 \mathrm {~km} / \mathrm { h }203.0 km/h to take off.On a 2000−m2000 - m2000−m runway,what is the minimum uniform acceleration necessary for the plane to take flight if it starts from rest?

Introduction

Newtonian Mechanics

Applying Newtons Laws

Circular Motion

Impulse and Linear Momentum

Work and Energy

Extended Bodies at Rest

Rotational Motion

Gases

Static Fluids

Fluids in Motion

First Law of Thermodynamics

Second Law of Thermodynamics

Electric Charge force and Energy

The Electric Field

Dc Circuits

Magnetism

Electromagnetic Induction

Vibrational Motion

Mechanical Waves

Reflection and Refraction

Mirrors and Lenses

Wave Optics

Electromagnetic Waves

Special Relativity

Quantum Optics

Atomic Physics

Nuclear Physics

Particle Physics

Filters

A car is moving with a speed of 32.0 m/s.The driver sees an accident ahead and slams on the brakes,causing the car to slow down with a uniform acceleration of magnitude 3.50 m/s².How far does the car travel after the driver put on the brakes until it comes to a stop?

A car travels at 15 m/s for 10 s.It then speeds up with a constant acceleration of 2.0 m/s² for 15 s.At the end of this time,what is its velocity?

A car accelerates from $5.0 \mathrm {~m} / \mathrm { s }$ to $21 \mathrm {~m} / \mathrm { s }$ at a constant rate of $3.0 \mathrm {~m} / \mathrm { s } ^ { 2 }$ How far does it travel while accelerating?

A car starting from rest accelerates at a constant 2.0 m/s² for 10 s.It then travels with constant speed it has achieved for another 10 s.Then it finally slows to a stop with constant acceleration of magnitude 2.0 m/s².How far does it travel after starting?

A rock is thrown upward with a speed of 12 m/s on the surface of planet X where the acceleration of objects in free fall is 1.5 m/s² and there is no atmosphere.How long does it take for the laser to reach the maximum height?

An airplane needs to reach a forward velocity of $203.0 \mathrm {~km} / \mathrm { h }$ to take off.On a $2000 - m$ runway,what is the minimum uniform acceleration necessary for the plane to take flight if it starts from rest?