Kinetic and Potential Energy. Kinetic energy is
directly proportional to the mass of the object and to the square of its velocity
: K.E. = 1/2 m v
2
. … If the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.
What does potential energy depend on?
Potential energy, stored energy that depends upon
the relative position of various parts of a system
. A spring has more potential energy when it is compressed or stretched. A steel ball has more potential energy raised above the ground than it has after falling to Earth.
What does kinetic and potential energy depend on?
Potential energy isn’t transferrable and it depends on the
height or distance and mass of the object
. Kinetic energy can be transferred from one moving object to another (vibration and rotation) and is dependent on an object’s speed or velocity and mass.
What is the kinetic energy of an object on what factors it depends on?
Kinetic energy of a body depends on
the mass and the velocity
.
What are two examples of kinetic and potential energy?
Kinetic energy and potential energy can change forms. For example,
the car moving up the hill is kinetic energy
. When the car reaches the top of the hill and is about to go down the hill, that is the potential energy. When the car moves forward down the hill it is then again kinetic energy.
What is the relationship between mass and kinetic energy?
An object with less speed and more mass could potentially have the same Kinetic energy. The equation for Kinetic Energy is:
KE = 1/2 mv
2
.
Kinetic energy has a direct relationship with mass, meaning that as mass increases so does the Kinetic Energy of an object.
What 3 things does potential energy depend on?
The factors that affect an object’s gravitational potential energy are its height relative to some reference point,
its mass, and the strength of the gravitational field it is in
.
What is the relationship between work and potential energy?
The potential energy
U is equal to the work
you must do against that force to move an object from the U=0 reference point to the position r. The force you must exert to move it must be equal but oppositely directed, and that is the source of the negative sign.
What is the difference between kinetic and potential energy?
The main difference between potential and kinetic energy is that
one is the energy of what can be and one is the energy of what is
. In other words, potential energy is stationary, with stored energy to be released; kinetic energy is energy in motion, actively using energy for movement.
How does the kinetic energy of an object depends on its velocity?
Kinetic energy depends on
the velocity of the object squared
. This means that when the velocity of an object doubles, its kinetic energy quadruples. … Kinetic energy must always be either zero or a positive value. While velocity can have a positive or negative value, velocity squared is always positive.
What factors does the kinetic energy of an object depends on two answers?
1. Explain that there are two factors that affect how much kinetic energy a moving object will have:
mass and speed
.
Does the kinetic energy of an object depends on its direction of motion?
The kinetic energy of an object is the
energy it has because of its motion
. … Note that energy is a scalar quantity, i.e., it does not depend on direction, and it is always positive. When we double the mass, we double the energy; however, when we double the velocity, energy increases by a factor of four.
What are 2 examples of potential energy?
- A raised weight.
- Water that is behind a dam.
- A car that is parked at the top of a hill.
- A yoyo before it is released.
- River water at the top of a waterfall.
- A book on a table before it falls.
- A child at the top of a slide.
- Ripe fruit before it falls.
What are 5 examples of potential energy?
- Pendulum. …
- Spring. …
- Bow & Arrow. …
- Rock At Cliff’s Edge. …
- Food We Eat. …
- Water In Dams & Reservoirs. …
- Snow. …
- Bullet.
What is the formula for potential and kinetic energy?
For the gravitational force the formula is
P.E. = mgh
, where m is the mass in kilograms, g is the acceleration due to gravity (9.8 m / s
2
at the surface of the earth) and h is the height in meters. Notice that gravitational potential energy has the same units as kinetic energy, kg m
2
/ s
2
.
What is the relationship between mass and kinetic energy speed and kinetic energy?
The kinetic energy of a moving object is
directly proportional to its mass and directly proportional to the square of its velocity
. This means that an object with twice the mass and equal speed will have twice the kinetic energy while an object with equal mass and twice the speed will have quadruple the kinetic energy.
