Which if either has a greater momentum: a 1-kg moving at 2m/s or a 2-kg bad moving at 1 m/s. Which has a greater kinetic energy? Same momentum, but different KE. The 1-kg ball traveling at 2 m/s has a greater KE.
When the mass of a moving object is doubled with no change in speed by what factor is its momentum changed its kinetic energy?
Answer and Explanation: Doubling the mass of the object doubles both the kinetic energy and momentum. The factor that these variables change is 2.
How does conservation of momentum relate to the conservation of energy?
Conservation of Energy: the total energy of the system is constant. Conservation of Momentum: the mass times the velocity of the center of mass is constant. Conservation of Angular Momentum: The total angular momentum of the system is constant.
What happens to potential energy as the car goes down the hill?
3.6 & 3.7 The Law of Conservation of Energy. As the car coasts down the hill, it moves faster and so it’s kinetic energy increases and it’s potential energy decreases. On the way back up the hill, the car converts kinetic energy to potential energy.
Which has greater kinetic energy A 2.0 kg mass moving at 3.0m s or a 1.0 kg mass moving at 6.0 m s?
Answer: both have same kinetic Ener.
Which formula can be used to find velocity if kinetic energy and mass are known?
Kinetic energy is directly proportional to the mass of the object and to the square of its velocity: K.E. = 1/2 m v2. 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.
When the mass of an object moving at a constant speed doubles its momentum changes by a factor of and its kinetic energy changes by a factor of?
Therefore, when the momentum is doubled, the kinetic energy goes up by a factor of 4.
What will happen to the kinetic energy of an object if its mass is doubled but the mass remains the same?
1) If mass doubled then kinetic energy also gets doubled. And according to the question the body is doubled at constant velocity. i.e.Twice the kinetic energy. And according to the question the velocity is doubled at constant mass.
When the momentum of an object doubles and its mass is constant its kinetic energy is?
Kinetic energy is directly proportional to the squared of the velocity. This means that when momentum is doubled, mass remaining constant, velocity is doubled, as a result now kinetic energy becomes four times greater than the original value. Was this answer helpful?
When can we apply conservation of energy?
Conservation of mechanical energy only applies when all forces are conservative. Luckily, there are many situations where nonconservative forces are negligible, or at least a good approximation can still be made when neglecting them.
How Newton’s laws relate to the law of conservation of energy & momentum?
Newton’s First Law states that bodies at rest will remain at rest as long as no forces act upon them, and bodies in motion will remain in motion as long as no forces act upon them. As one can see, Newton’s First Law is a statement about conservation of momentum and energy.
Why are conservation laws in physics important?
An important function of conservation laws is that they make it possible to predict the macroscopic behaviour of a system without having to consider the microscopic details of the course of a physical process or chemical reaction.
How do kinetic energy gravitational potential energy and heat due to friction change as the marble rolls down the ramp?
As the marble rolls down the hill its potential energy is converted to kinetic energy (its height decreases, but its velocity increases). When the marble goes back up the loop its height increases again and its velocity decreases, changing kinetic energy into potential energy.
Which of the following measures the average kinetic energy of a system?
Temperature is a measure of the average kinetic energy of the atoms or molecules in the system.
Which one of the following energy conversions takes place when we burn a fossil fuel?
When fossil fuels are burned, the chemical energy changes to thermal energy and the thermal energy is then used to generate electrical energy. These are all examples of energy conversion.
Which has a greater momentum a car Travelling at 30 kph or a car of half the mass of the first Travelling at 60 kph?
Which has greater kinetic energy, a car traveling at 30 km/h or a half-as-massive car traveling at 60 km/h? Both have the same kinetic energy.
What is the kinetic energy of a 10 kg object moving at 2.0 ms?
Speed of the object (v) = 2 m/s. Kinetic Energy (K.E) = ½ mv2. = ½ (10)(2)2 ⇒ 20 joules. The kinetic energy of the object is 20 J.
Which of the following increases the kinetic energy of an object?
The kinetic energy of an object increase with its velocity. The kinetic energy of an object is the energy it has because of its motion.
What energy transformation occurs as the pendulum swings from point A to C from Point C to E?
As a pendulum swings, its potential energy converts to kinetic and back to potential.
What are the factors affecting potential and kinetic energy respectively?
The amount of potential energy depends on the object’s mass, the strength of gravity and how high it is off the ground. When you drop the object, this potential energy is converted into kinetic energy, or the energy of motion. Kinetic energy depends on an object’s mass and its speed.
What is the relationship between the kinetic energy of an object and the mass of an object assume the speed is constant?
Kinetic energy has a direct relationship with mass, meaning that as mass increases so does the Kinetic Energy of an object. The same is true of velocity.
What is the percentage change in the kinetic energy of a body if its momentum is increased by 2%?
What is the percentage change in KE of a body if its momentum is increased by 2%? Ans. 4%
How much percentage variation in kinetic energy is seen when the momentum of the body is doubled?
The correct option is B Assertion :When the momentum of a body is doubled, its kinetic energy increases by 300%.
How can we change the momentum of a body without change in its kinetic energy?
You have to remember than both momentum and kinetic energy depend upon the mass (m) and velocity (v) of the body. So, it not possible to change the momentum of a body without changing its kinetic energy and vice versa.
What will be the kinetic energy of a body when its mass is made four time and the velocity is doubled?
Hence, The New kinetic energy is 16 times to that of original.