Book edition 1st Edition

Author(s) Paul Peter Urone

Pages 1272 pages

ISBN 9781938168000

Answers without the blur.

Just sign up for free and you're in.

Short Answer

(a) Calculate Earth’s average speed relative to the Sun.
(b) What is its average velocity over a period of one year?

a. Earth’s average speed related to Sun is $3 \times 10^{4} m/s$ .

b. The average velocity of the earth is zero.

See the step by step solution

Step by Step Solution

TABLE OF CONTENTS :

TABLE OF CONTENTS

Step 1: Average speed of earth around the Sun

Average speed is the ratio of the total distance travelled to that of the total time taken to travel that distance.

$\begin{matrix} Average Speed = \frac{Total Distance}{Total Time} \\ S = \frac{Circumference of earth's orbit around sun}{1 year} \\ S = \frac{2 πR}{1 year} \end{matrix}$

Substituting values in the above equation, we get,

$\begin{matrix} S = \frac{2 \times 3 .14 \times 1 .5 \times 10^{11} m}{365 \times 24 \times 3600 s} \\ S = 3 \times 10^{4} m/s \end{matrix}$

Hence the average speed of the earth around the sun is $30000 m/s$ .

Step 2: Average Velocity of the earth around the Sun

The average velocity is the ratio of the average displacement to that of the time period.

In the case of circular motion, after one year, the earth is coming back to its initial position.

Hence displacement will be zero.

$Average velocity = \frac{Total Displacement}{Total Time}$

Substituting values in the above equation, we get,

$\begin{matrix} V = \frac{0}{1 year} \\ V = \frac{0}{365 \times 24 \times 3600} \\ V = 0 m/s \end{matrix}$

Hence the velocity will be zero, and the speed will be 0 m/s.

Find Study Materials for

Create Study Materials

Select your language

College Physics (Urone)

Answers without the blur.

Short Answer

(a) Calculate Earth’s average speed relative to the Sun.
(b) What is its average velocity over a period of one year?

Step by Step Solution

Step 1: Average speed of earth around the Sun

Step 2: Average Velocity of the earth around the Sun

Most popular questions for Physics Textbooks

Want to see more solutions like these?

Recommended explanations on Physics Textbooks

Select your language

College Physics (Urone)

Answers without the blur.

Short Answer

(a) Calculate Earth’s average speed relative to the Sun. (b) What is its average velocity over a period of one year?

Step by Step Solution

Step 1: Average speed of earth around the Sun

Step 2: Average Velocity of the earth around the Sun

Most popular questions for Physics Textbooks

Want to see more solutions like these?

Recommended explanations on Physics Textbooks

Work Energy and Power

Radiation

Astrophysics

Physics of Motion

Scientific Method Physics

Fluids

Torque and Rotational Motion

Nuclear Physics

Fields in Physics

Measurements

Space Physics

Electricity

Physical Quantities and Units

Medical Physics

Electrostatics

Further Mechanics and Thermal Physics

Mechanics and Materials

Engineering Physics

Energy Physics

Force

Particle Model of Matter

Waves Physics

Magnetism

Modern Physics

Atoms and Radioactivity

Dynamics

Electricity and Magnetism

Conservation of Energy and Momentum

Fundamentals of Physics

Kinematics Physics

Circular Motion and Gravitation

Linear Momentum

Rotational Dynamics

Oscillations

Translational Dynamics

Geometrical and Physical Optics

Thermodynamics

Magnetism and Electromagnetic Induction

Electromagnetism

Electric Charge Field and Potential

Turning Points in Physics

(a) Calculate Earth’s average speed relative to the Sun.
(b) What is its average velocity over a period of one year?