Question 1

An object is at x = -3 m and has a velocity of 4 m/s. It is observed to be slowing down. Its acceleration is

Accepted Answer

A)  positive. 
B)  negative. 
C)  zero. 
D)  negative until the object stops and then positive. 
E)  impossible to determine based on the information provided. 
A)  positive. 
B)  negative. 
C)  zero. 
D)  negative until the object stops and then positive. 
E)  impossible to determine based on the information provided.

Question 2

In which graph is the particle the farthest from the origin at t = 5 s?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  5 
A)  1 
B)  2 
C)  3 
D)  4 
E)  5

Question 3

A car accelerates uniformly from rest to a speed of 20 m/s at the end of 1 min; it then accelerates uniformly to a speed of 40 m/s at the end of the next minute. During this 2-min period, the average speed of the car is

Accepted Answer

A)  7.5 m/s 
B)  30 m/s 
C)  15 m/s 
D)  20 m/s 
E)  40 m/s 
A)  7.5 m/s 
B)  30 m/s 
C)  15 m/s 
D)  20 m/s 
E)  40 m/s

An object is at x = -3 m and has a velocity of 4 m/s. It is observed to be slowing down. Its acceleration is

In which graph is the particle the farthest from the origin at t = 5 s?

A car accelerates uniformly from rest to a speed of 20 m/s at the end of 1 min; it then accelerates uniformly to a speed of 40 m/s at the end of the next minute. During this 2-min period, the average speed of the car is

Systems of Measurement

Motion in Two and Three Dimensions

Newtons Laws

Applications of Newtons Laws

Work and Energy

Conservation of Energy

Systems of Particles and Conservation of Linear Momentum

Rotation

Conservation of Angular Momentum

Gravity

Static Equilibrium and Elasticity

Fluids

Oscillations

Wave Motion

Superposition and Standing Waves

Temperature and the Kinetic Theory of Gases

Heat and the First Law of Thermodynamics

The Second Law of Thermodynamics

Thermal Properties and Processes

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Exam 2: Motion in One Dimension

An object is at x = -3 m and has a velocity of 4 m/s. It is observed to be slowing down. Its acceleration is

In which graph is the particle the farthest from the origin at t = 5 s?

A car accelerates uniformly from rest to a speed of 20 m/s at the end of 1 min; it then accelerates uniformly to a speed of 40 m/s at the end of the next minute. During this 2-min period, the average speed of the car is

Systems of Measurement

Motion in Two and Three Dimensions

Newtons Laws

Applications of Newtons Laws

Work and Energy

Conservation of Energy

Systems of Particles and Conservation of Linear Momentum

Rotation

Conservation of Angular Momentum

Gravity

Static Equilibrium and Elasticity

Fluids

Oscillations

Wave Motion

Superposition and Standing Waves

Temperature and the Kinetic Theory of Gases

Heat and the First Law of Thermodynamics

The Second Law of Thermodynamics

Thermal Properties and Processes

Filters