The main difference between speed and velocity involves A. distance.
B. gravity.
C. weight.
D. direction.

Answers

Answer 1

Answer: D. Direction, if someone is traveling on an interstate from New York to Boston at 65 MPH, the speed of the car is 65 MPH and the velocity is 65 MPH north-east.

Answer 2

Answer: Speed does not include direction.
Velocity includes direction.

Therefore, the main difference between speed and velocity is D. Direction.

FINAL ANSWER: D. direction

Related Questions

A proton moves along the x axis according to the equation x = 38 t + 14 t2, where x is in meters and t is in seconds. Calculate (a) the average velocity of the proton during the first 3.0 s of its motion, (b) the instantaneous velocity of the proton at t = 3.0 s, and (c) the instantaneous acceleration of the proton at t = 3.0 s.
A 111 ‑turn circular coil of radius 2.11 cm and negligible resistance is immersed in a uniform magnetic field that is perpendicular to the plane of the coil. The coil is connected to a 14.1 Ω resistor to create a closed circuit. During a time interval of 0.125 s, the magnetic field strength decreases uniformly from 0.669 T to zero. Find the energy, in millijoules, that is dissipated in the resistor during this time interval.
An object is dropped from a height of 25 meters. At what velocity will it hit the ground?
.Please explain to me how to find the momentum
Eric is walking forwards at 0.5 m/s and then hears a blackbear charging from behind. He continues to move forwardand increases his speed to 10 m/s within 3 seconds. What wasEric's acceleration?0 3.2 m/sO 3.2 m/s^20 -3.2 m/s^2O 10 m/s^2O Other:

A 20600 kg sailboat experiences an eastward force 17700 N due to the tide pushing its hullwhile the wind pushes the sails with a force of 60000 N directed toward the northwest (45◦ westward of North or 45◦ northward of West). What is the magnitude of the resultant acceleration of the sailboat?

Answers

Answer:

2.23 m/s²

Explanation:

mass of sail boat, m = 20600 kg

Force along east, F1 = 17700 N

Force along north west, F2 = 60000 N

write the forces in vector form

$\overrightarrow{F_(1)}=17700 \widehat{i}$

$\overrightarrow{F_(2)}=60000\left ( - Cos45 \widehat{i}+Sin45\widehat{j}\right )$

$\overrightarrow{F_(2)}=-42426.41\widehat{i}+42426.41\widehat{j}$

Net force acting on the boat

$\overrightarrow{F}=\overrightarrow{F_(1)}+\overrightarrow{F_(2)}$

$\overrightarrow{F}=17573.6\widehat{i}+42426.41\widehat{j}$

The magnitude of net force is given by

$F=\sqrt{17573.6^(2)+42426.41^(2)}$

F = 45922 N

Acceleration = force / mass

a = 45922 / 20600

a = 2.23 m/s²

Light is the fastest travelling form of energy a. true b. false

Answers

A. True, Light is the fastest moving form of energy.

When a piece of aluminium foil is taken out of the oven and cools from 100C to 50C. What is the change in temperature?

Answers

When a piece of aluminum foil is taken out of the oven and cools from 100C to 50C. Then the change in temperature is 50°C.

What is temperature?

Temperature is a fundamental concept in physics that describes the degree of hotness or coldness of an object or system. It is a measure of the average kinetic energy of the molecules or particles that make up the object or system.

In other words, the temperature is a measure of how fast or slow the particles are moving. When the particles move faster, the temperature is higher, and when they move slower, the temperature is lower. Temperature is commonly measured using a thermometer, which is a device that detects changes in a physical property of a material, such as its volume, pressure, or electrical resistance, that vary with temperature.

The unit of measurement for temperature is the Kelvin (K) scale, although Celsius (°C) and Fahrenheit (°F) scales are also commonly used. The Kelvin scale is an absolute temperature scale, where 0 K represents the lowest possible temperature, known as absolute zero. The Celsius and Fahrenheit scales are relative scales that are defined by the freezing and boiling points of water at standard atmospheric pressure.

Here in the Question,

The change in temperature is 30 because the change in temperature is calculated by subtracting the initial temperature from the final temperature. In this case, the initial temperature is 100°C and the final temperature is 50°C. So the change in temperature is:

Change in temperature = final temperature - initial temperature

Change in temperature = 50°C - 100°C

Change in temperature = -50°C

The negative sign indicates a decrease in temperature, which is expected as the aluminum foil cools down from the higher initial temperature to the lower final temperature.

Therefore, it is common practice to report the absolute value of the change in temperature, which in this case is 50°C.

To learn more about the 2nd law of thermodynamics click:

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#SPJ2

Answer:

50°C

Explanation:

The change in temperature is basically the difference between the initial temperature to the final temperature. So change in temperature will be:

100°C - 50°C = 50°C

Which set of terms best defines what affects kinetic energy to potential energy, respectively?

Answers

Velocity and height are the terms that best describes what affects kinetic energy and potential energy.

By definition, the kinetic energy is given by:

Where,

m: body mass

v: body speed

On the other hand, the potential energy is:

Where,

m: body mass

g: acceleration of gravity

h: height of the object

Therefore, a set of terms that affects kinetic and potential energy are speed and height, respectively.

Answer:

The set of terms is speed and height, respectively.

The strength of the force of gravity depends ona. the masses of the objects and their speeds.
b. the masses of the objects and the distance between them.
c. the weight of the objects and their speeds.
d. the masses of the objects and their weights.

Answers

The correct answer to the question is : B) The masses of the objects and the distance between them.

EXPLANATION :

Before going to answer this question, first we have to understand Newton's law of gravitation.

As per Newton's law of gravitation, everybody in the universe attracts every other body with a force called gravitational force or force of gravity which is directly proportional to the product of masses of the two bodies, and inversely proportional to the square of separation distance between them.

Let us consider two bodies of masses M and M' which are separated by a distance R.

The gravitational force acting between them is calculated as -

Gravitational force $F=\ G(MM')/(R^2)$

Here, G is known as universal gravitational force constant.

From above, we see that force of gravity depends on the masses of the objects and the distance between them.

The strength of the forces of gravity between two objects is completely
determined by their masses and the distance between them.

Their speeds have no effect on the gravitational force, and their weight
IS the gravitational force.

In a oxidation-reduction reaction, the oxidizing agent always undergoes reduction. a. True
b. False

Answers

Answer: True

Explanation:

A chemical reaction in which the oxidation number of an atom, ion or molecule changes due transfer of electrons between two reactants is known as oxidation-reduction reaction or redox reaction. In Redox reaction, the oxidising agent brings oxidation by gaining electrons and reducing it self.

Example:

Zn + Cu²⁺ → Zn²⁺ + Cu

Here, Cu²⁺ is an oxidizing agent which got reduced to Cu .

Thus, the given statement is true.

Final answer:

It's true that in an oxidation-reduction reaction, the oxidizing agent always undergoes reduction. The oxidizing agent is a substance that is capable of oxidizing other substances, meaning it causes them to lose electrons. By taking these electrons, the oxidizing agent itself is reduced.

Explanation:

In an oxidation-reduction reaction, also known as a redox reaction, the statement that the oxidizing agent always undergoes reduction is indeed true. The oxidizing agent is a substance that has the ability to oxidize other substances, meaning it causes them to lose electrons. In taking these electrons, the oxidizing agent itself is reduced. This is due to the principle that in a redox reaction, when one substance is oxidized (loses electrons), another substance must be reduced (gain electrons).