You travel in a circle, whose circumference is 8 kilometers, at an average speed of 8 kilometers/hour. If you stop at the same point you started from, what is your average velocity?

Answers

Answer 1

Answer:

Answer: The average velocity will be 0 m/s.

Explanation:

Average velocity is defined as the fraction of displacement and total time.

$\text{Average velocity}=\frac{Displacement}{\text{total time}}$

In the given question, it states that the person stops at the same point from where it started, which means that the displacement of this person is 0 meters.

Therefore, the average velocity becomes:

$\text{Average velocity}=\frac{0}{\text{total time}}=0m/s$

Hence, the average velocity will be 0 m/s.

Answer 2

Answer: the answer is 8 kilometers per hour

Related Questions

Elena (60.0 kg) and Madison (65.0 kg) are ice-skating at the Rockefeller ice rink in New Yok city. Their friend Tanner sees Elena move to the right with a speed of 1.20 m/s towards Madison. Madison is moving to the left at a speed of 2.50 m/s towards Elena.1. What is Elena's momentum? (Assume the positive direction is to the right and the negative direction is to the left.)2, What is Madison's momentum? (Assume the positive direction is to the right and the negative direction is to the left.)3. What is the total momentum of Elena and Madison?4. When Elena and Madison collide, they hold onto each other. With what speed and in what direction do both of them move at?
Watch theses videos first:1. Will put the link in the chatThen go to this link when you go there you will see request access sent me request saying brainly in the box the I will accept it then you watch the video up there then you then you will complete the slide that you will request for I will be posting the link to that in the chat.Here is the directions for the slide you guys are going to be doing: Step 1: Draw a model to show how sound is created and how you think it makes the windows move. Step 2: Label your model with explanations. Include all of these science vocabulary/concepts: vibrations/oscillations, force, energy, and transfer. By the way this the Brainly committee we will be testing how smart you guys are so guys prove it. If you do this right the Brainly will sent 500 brainly points into the account that answers it right. If you have any questions please ask.
True or false. The light bulbs in an office building give off tremendous amounts of heat. Since heat is a form of energy, this heat could be trapped and used to offset our need for electricity, thus saving energy and money.
What is true about discipline
6. Two blocks are released from rest at the same height. Block A slides down a steeper ramp than Block B. Both ramps are frictionless. The blocks reach the same final height indicated by the lower dashed line. Block B weighs more than Block A. a. Is the work done by the gravitational force on Block A (greater/less than/equal to) the work done by the gravitational force on Block B? Explain your reasoning. b. Is the speed of Block A (greater/less than/equal to) the speed of Block B? Explain your reasoning. c. Is the momentum of Block A (greater/less than/equal to) the momentum of Block B? Explain your reasoning.

When heating a substance, a phase change will start to occur when the kinetic energy of the particles is _____________ the attractive forces between the particles. Question 8 options: A. great enough to combine
B. low enough to combine
C. low enough to overcome
D. equal to
E. great enough to overcome

Answers

Answer: E. great enough to overcome.

Explanation: The three phases of the substances are solid, liquid and gas.

When a substance is heated, that is the molecules gain kinetic energy as kinetic energy is directly proportional to temperature.

The phase change will take place only when kinetic energy will be greater than the inter molecular forces as the molecules have to move in more random motion.

For example: Solid with high inter molecular forces are heated to convert it into liquid state only when kinetic energy will overcome the inter molecular forces of attraction.

Your answer is great enough to overcome :)

Which term describes the time it takes for an object to complete one full cycle of motion on a spring?

Answers

The term period (symbol: T) describes the time it takes for an object to complete one full cycle of motion on a spring.

The formula for time is: T = 1 / f , where f is the frequency , f= c / λ = wave speed c (m/s) / wavelength λ (m)..

The formula describes that as the frequency of a wave increases, the time period of the wave decreases.

There is no correct choice on the list you provided.

That time is called the "period" of the motion

A mass of 1.0 kg is initially held in place on a ramp of angle 45o at height of 20. meters above the ground. The mass is released and slides to the bottom of the ramp (h=0). There is friction between the mass and the ramp. At the bottom of the ramp, the object has a speed of 10. m/s. The thermal energy was generated by the friction as the mass slides down the ramp is closest to which value?

Answers

Answer:

The thermal energy generated by the friction as the mass slides down the ramp is $\bf{146~J}$ .

Explanation:

Given:

The mass of the object is, $m = 1.0~kg$

The angle of the ramp is, $\theta = 45^(0)$

The initial height of the object on the ramp is, $h = 20~m$

The final velocity of the object is, $v = 10~m/s$

When the object is at rest on the ramp, its total energy is potential energy. When it moves down the ramp its kinetic energy is increased and potential energy is decreased and a part of its energy is lost to overcome the force of friction. Finally, when it is at the bottom of the ramp, its total energy becomes only kinetic energy.

The total energy of the object at a height $20~m$ on the ramp is given by

$E_(1) &=& mgh\n~~~~&=& (1.0~kg)(9.8~m/s^(2))(20~m)\n~~~~&=& 196~J$

When the object is at the bottom of the ramp, its total energy is given by

$E_(2) &=& (1)/(2)mv^(2)\n~~~~&=& (1)/(2)(1.0~kg)(10~m/s)^(2)\n~~~~&=& 50~J$

So, the energy that is lost as thermal energy is given by

$E &=& E_(1) - E_(2)\n~~~~&=& 196~J - 50~J\n~~~~&=& 146~J$

When is heat positive or negative? I need it please help me

Answers

I may be wrong, but I really don't think there's any such thing as
negative or positive heat. Heat is one of the forms of energy, so
it can never pop up out of nowhere, and it can never disappear.
Like all energy, heat just moves from place to place. If it flows
out of one thing, then it flows into something else. So I don't think
it's ever correct to say that the heat that's over there, or the heat
that's moving from here to there, is positive or negative.

(a) in an experiment, cold water is poured into a bowl made of an insulating material, the containeris placed in a draught-free room. After several hours, the volume and the temperature of the

water are found to have decreased.

Name and describe the process that causes the decrease in the volume of the water, and

explain why the temperature of the water decreases.

Answers

Answer: Evaporation and heat loss to the surrounding.

Explanation:

The process is known as evaporation.

Evaporation takes place at any temperature but increases with increase in temperature. The molecules of water evaporate, that is, escape into the atmosphere thereby causing the volume of water to reduce.

The temperature decreases due to heat loss from the water into the surrounding. This will cause the temperature of the water to drop.

A car's velocity changes from 32m/s to 96m/s in an 8.0-s period. what is its acceleration?

Answers

|Acceleration| = (change in speed) / (time for the change)

Change in speed = (speed at the end) minus (speed at the beginning).

Change in speed = (96 m/s - 32 m/s) = 64 m/s

|Acceleration| = (64 m/s) / (8.0 sec) = 8.0 m/s²

This solution is written in terms of speed and the absolute value
of acceleration. The question gives no information regarding the
direction of motion at any time, so it's not possible to say anything
about velocity, or the direction of acceleration.

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