Table of Contents

Which has greater kinetic energy car a Travelling at 30 km/hr or car B which has half the mass Travelling at 60 km HR?

The formula for kinetic energy is one half the mass times velocity squared. Which means that if you double the velocity, the kinetic energy quadruples. Therefore, the lighter car travelling at twice the speed has greater kinetic energy. The car with half the mass has greater kinetic energy.

Which car has more kinetic energy a car with greater or less mass?

Since the speed of both the cars is same, hence the car with greater mass will possess more kinetic energy.

Which car has more kinetic energy a car with greater speed or a car with less speed?

It turns out that an object’s kinetic energy increases as the square of its speed. A car moving 40 mph has four times as much kinetic energy as one moving 20 mph, while at 60 mph a car carries nine times as much kinetic energy as at 20 mph.

Which has more kinetic energy a car traveling at 30 km/h or a car with twice the mass traveling at 15 km h?

Keep this in mind: Kinetic energy is affected by speed. Potential energy is affected by elevation. Since both have the same mass, the car moving at twice the speed (i.e. the 30 km/h car) has 4 times the kinetic energy as the other car (the 15 km/h car).

Which has greatest kinetic energy?

So kinetic energy is greatest when an object’s speed is greatest — it’s as simple as that. Kinetic energy is also proportional to the mass of an object, and due to relativistic effects, an object’s mass also increases as that object’s velocity approaches the speed of light.

Which car has a larger kinetic energy?

Kinetic of the car › Kinetic energy of the lorry ( as the kinetic energy of the vehicle is inversely proportional to the mass of the vehicle. A lighter vehicle has larger kinetic energy.

What is the kinetic energy of a 0.135 kg baseball thrown at 40.0 ms 85.0 J 87.0 J 108 J 216 J?

Ek=(0.135)(40.0)22 . Ek=108J .

When a gun is fired which has the greater kinetic energy the bullet or the recoiling gun?

Law of conservation of momentum dictates that a free recoiling gun and bullet will have equal momentum in opposite direction. Since the gun is always heavier, it will have lower velocity. When calculating kinetic energy, velocity is squared, so the kinetic energy of the bullet is always higher.

How do you find kinetic energy?

In classical mechanics, kinetic energy (KE) is equal to half of an object’s mass (1/2*m) multiplied by the velocity squared. For example, if a an object with a mass of 10 kg (m = 10 kg) is moving at a velocity of 5 meters per second (v = 5 m/s), the kinetic energy is equal to 125 Joules, or (1/2 * 10 kg) * 5 m/s2.

How do you differentiate kinetic and potential energy?

Potential energy is the stored energy in any object or system by virtue of its position or arrangement of parts. However, it isn’t affected by the environment outside of the object or system, such as air or height. On the other hand, kinetic energy is the energy of an object or a system’s particles in motion.

Which of the following energy forms is the sum of kinetic?

Mechanical Energy
Mechanical Energy:

In general, the total mechanical energy is the sum of the kinetic energy and potential energy. The kinetic energy is proportional to the product of the mass of the object and the square of the speed.

Which form of energy is involved in weighing fruit on a spring scale?

Which forms of energy is involved in weighing fruit on a spring scale? Elastic potential energy.

What does kinetic energy depend on?

Kinetic energy is a form of energy that an object or a particle has by reason of its motion. … Kinetic energy is a property of a moving object or particle and depends not only on its motion but also on its mass.

Where does a car on a hill have the greatest potential energy?

A Car on a Hill

When the car is at the top of the hill it has the most potential energy. If it is sitting still, it has no kinetic energy. As the car begins to roll down the hill, it loses potential energy, but gains kinetic energy.

What is the kinetic energy of the car in joules?

Typical kinetic energies of moving objects
mass (kg) kinetic energy (J)
sprinter 75 3,750
car at 30 mph 1,500 135,000
car at 60 mph 1,500 540,000
car at 90 mph 1,500 1,214,000

Does a car’s kinetic energy change more when the car speeds up from 10 to 15 m/s or from 15 to 20 m/s explain?

Answer and Explanation: The kinetic energy changes more if the car goes from 15 m/s to 20 m/s.

Where would a car traveling on a roller coaster have the most potential energy?

Gravitational potential energy is greatest at the highest point of a roller coaster and least at the lowest point.

What kinetic energy depends on mass?

The amount of translational kinetic energy (from here on, the phrase kinetic energy will refer to translational kinetic energy) that an object has depends upon two variables: the mass (m) of the object and the speed (v) of the object. The following equation is used to represent the kinetic energy (KE) of an object.

Does the kinetic energy of a car change more when it speeds up from?

Yes, a car’s kinetic energy changes with the speed. Think about it. If a car is going faster, it has more potential to do damage. Cars going slower have less potential energy than cars going faster.

How does a cars kinetic energy change when it speeds up?

When a car’s speed increases from 10 m/s to 20 m/s, the kinetic energy increases by a factor of four.

Which car has a larger momentum when it crosses the finish line 1.0 m away?

C) Which car has a larger momentum when it crosses the finish line 1.0 away? => Car A because car A has a greater mass than car B they both have the same speeds therefore car A it will have more momentum.

What units is kinetic energy in?

The units of kinetic energy are mass times the square of speed, or kg · m 2 /s 2 kg · m 2 /s 2 . But the units of force are mass times acceleration, kg · m/s 2 kg · m/s 2 , so the units of kinetic energy are also the units of force times distance, which are the units of work, or joules.

During which interval is the largest amount of energy required to stretch the spring?

From to From to The energy required is the same in all three intervals. segment, and the area under the third segment from to is five times larger than in the first segment. So more energy is required to pull the spring through the third segment.