PHYSICS HIGH SCHOOL

What is relative velocity?

Answers

Answer 1

Answer: Relative velocity is the velocity of an object or observer B in the rest frame of another object or observer A

Answer 2

Answer:

Answer:

the velocity of a moving body relative to another body is called relative velocity.

Related Questions

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The energy of the ball has been reduced by joules after bouncing back. This reduction happens because potential energy transforms to energy.
The process in which a substance changes from a gaseous state to the liquid state is A. critical temperature. B. absolute zero. C. evaporation. D. condensation.
The weight of a body will be zero during free fall. Why?

What kind of energy does a rubber band have when it is stretched? a. elastic potential energy

b. gravitational potential energy

c. kinetic energy

d. chemical energy

Answers

Elastic potential energy. When you stretch a rubber band it has the "potential" to do work, to fly in a given direction. In doing so it changes it's elastic potential energy to kinetic energy.

Answer:

elastic potential energy

Explanation:

A graph of the motion of a pendulum shows that it swings from +5 centimeters to -5 centimeters for each cycle. What is the amplitude of the pendulum?

Answers

The amplitude of the pendulum is 5cm.

What is the amplitude?

Amplitude is the maximum displacement of the wave from its mean position upwards or downwards.

As the graph of the motion of pendulum swings from +5cm to -5cm for each cycle, the magnitude of peak amplitude of the pendulum is 5 centimeters.

Learn about amplitude.

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the peak amplitude of the pendulum is 5 centimeters, the peak to peak amplitude of the pendulum is 10 centimeters.

in this case, i think peak to peak amplitude makes more sense

If an object has an overall negative charge, what force will it feel when itgets close to an object with an overall positive charge? *

Answers

Answer:

When a negatively charged object is brought near a positively charged object, an attractive force is produced. ... When a negatively charged object is brought near the knob of a neutral electroscope, the negative charge repels the electrons in the knob, and those electrons move down the stem into the leaves.

Answer:

Suppose that you rubbed a balloon with a sample of animal fur such as a wool sweater or even your own hair. The balloon would likely become charged and its charge would exert a strange influence upon other objects in its vicinity. If some small bits of paper were placed upon a table and the balloon were brought near and held above the paper bits, then the presence of the charged balloon might create a sufficient attraction for the paper bits to raise them off the table. This influence - known as an electric force - occurs even when the charged balloon is held some distance away from the paper bits. The electric force is a non-contact force. Any charged object can exert this force upon other objects - both charged and uncharged objects. One goal of this unit of The Physics Classroom is to understand the nature of the electric force. In this part of Lesson 1, two simple and fundamental statements will be made and explained about the nature of the electric force.

Perhaps you have heard it said so many times that it sounds like a cliché.

Opposites attract. And likes repel.

These two fundamental principles of charge interactions will be used throughout the unit to explain the vast array of static electricity phenomena. As mentioned in the previous section of Lesson 1, there are two types of electrically charged objects - those that contain more protons than electrons and are said to be positively charged and those that contain less protons than electrons and are said to be negatively charged. These two types of electrical charges - positive and negative - are said to be opposite types of charge. And consistent with our fundamental principle of charge interaction, a positively charged object will attract a negatively charged object. Oppositely charged objects will exert an attractive influence upon each other. In contrast to the attractive force between two objects with opposite charges, two objects that are of like charge will repel each other. That is, a positively charged object will exert a repulsive force upon a second positively charged object. This repulsive force will push the two objects apart. Similarly, a negatively charged object will exert a repulsive force upon a second negatively charged object. Objects with like charge repel each other.

Explanation:

The work done by stretching a certain spring increases by 0.13x joules per centimeter (where x is the displacement, in centimeters, beyond the spring's natural length). How much work (in Joules) must be done in order to stretch the spring from x?

Answers

Answer:

$W = 0.06\cdot (x_(f)^(2)-x_(o)^(2))$

Explanation:

The work done by stretching the spring is:

$W = 0.13\int\limits^{x_(f)}_{x_(o)} x\, dx$

$W = 0.06\cdot (x_(f)^(2)-x_(o)^(2))$

Is it possible for an object to move so that it produces an absolutely vertical line on the velocity-time graph? Explain.

Answers

Answer: No.

Explanation: If an object moved to produce a vertical line on the velocity-time graph, it would mean that it would move at an infinite speed with no change in time. Nothing moves at an infinite speed; it is just not possible.

If you wanted to look at it through a calculus lens, acceleration is the derivative of velocity. You can't take the derivative of a vertical tangent line, so the acceleration wouldn't exist. This isn't possible if an object is moving; it has to have either constant acceleration or a non-zero acceleration.

A child throws a ball into the air and then catches it when it comes down. What us the effect on the ball's potential energy?A. Potential energy increases, then decreases to the original level.
B. Potential energy decreases, then increases to the original level.
C. Potential energy remains the same throughout the ball's trajectory.
D. The answer cannot be determined from the information provided.