When the speed of your car is doubled by what factor does its kinetic energy increase when the speed of your car is doubled by what factor does its kinetic energy increase 2 √ 2 4 8?
Doubling the velocity increased the kinetic energy by 4.
What happens to kinetic energy when speed is doubled?
The kinetic energy is proportional to the square of the speed, so doubling the speed increases the kinetic energy by a factor of 4.
When a car’s speed is doubled its kinetic energy is?
Kinetic energy increases with the square of the speed. Neglecting friction, an engine does four times as much work to make a car reach a speed of 60 miles/h as to make it reach a speed of 30 miles/h. When the speed of a car is doubled, its kinetic energy increases by a factor of four.
How much will the kinetic energy of a body increase if its speed is doubled?
1 Answer. Kinetic energy of a body depends on its mass and its speed. Hence,,kinetic energy will become 4 times the original kinetic energy if the speed is doubled.
Which requires more work increasing a cars speed?
The work done is equivalent to energy. Therefore, the work can be compared to the kinetic energy. Since 109.89m J > 89.91m J, more work is required to increase the car’s speed from 50 mph to 60 mph.
At what point does the ball have the greatest kinetic energy?
The velocity of the ball increases as it falls, which means that the ball attains its greatest velocity, and thus its greatest kinetic energy, at E. 19.
What are the factors that affect kinetic energy?
1. Explain that there are two factors that affect how much kinetic energy a moving object will have: mass and speed.
Which will have the greatest impact on kinetic energy?
Because kinetic energy is proportional to the velocity squared, increases in velocity will have an exponentially greater effect on translational kinetic energy. Doubling the mass of an object will only double its kinetic energy, but doubling the velocity of the object will quadruple its velocity.
How does kinetic energy change with 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. Thus a modest increase in speed can cause a large increase in kinetic energy.
What happens to a car’s kinetic energy if its speed triples?
If a car’s speed doubles, its kinetic energy increases by 4, if its speed triples then the kinetic energy increases by 9.
How do you find the speed of 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 find the maximum kinetic energy?
The maximum kinetic energy KEe of ejected electrons (photoelectrons) is given by KEe = hf − BE, where hf is the photon energy and BE is the binding energy (or work function) of the electron to the particular material.
What happens to the kinetic energy of the body weighing 2 kg if the speed is doubled?
If you double the mass of an object, you double the kinetic energy. If you double the speed of an object, the kinetic energy increases by four times.
What happens to the speed of a body when its kinetic energy is increased to four times the original kinetic energy?
If the kinetic energy of a body becomes 4 times then what will be the percentage increase in its momentum. Therefore, when the kinetic energy increases by four times, then the moment will increase by two times.
How will the momentum change if kinetic energy is doubled?
If kinetic energy is doubled, the momentum becomes, p′=2m(2K) =2 p.