You are told 3 things...1. That there are two objects with equal masses. 2. Both objects are in motion. 3. One object has a greater kinetic energy than the other. How is this possible?
One object has a greater density then the other object.
One object is blue and one object is red.
One object has a greater speed than the other object
One object has a greater volume than the other object
5 answers
One possible explanation is that one object has a greater speed than the other object. Kinetic energy is proportional to the square of an object's speed, so if one object is moving faster than the other, it will have a greater kinetic energy, even if they have equal masses.
A large truck and a small care are moving at the same speed, traveling up and down hills, and over bumpy roads. Which has more kinetic energy?
Both the large truck and the small car will have the same kinetic energy if they are moving at the same speed. Kinetic energy depends on the mass and the square of the velocity of an object. Since the question states that they are moving at the same speed, the only factor that could affect the kinetic energy is the mass. As both the large truck and the small car are moving at the same speed, they will have the same kinetic energy if they have equal masses.
Which object has more kinetic energy?
a blue car with a mass of 500 kg moving at 30 m/s
a yellow car with a mass of 500 kg moving at 12 m/s
a green car with a mass of 500 kg moving at 21 m/s
a red car with a mass of 500 kg moving at 3 m/s
a blue car with a mass of 500 kg moving at 30 m/s
a yellow car with a mass of 500 kg moving at 12 m/s
a green car with a mass of 500 kg moving at 21 m/s
a red car with a mass of 500 kg moving at 3 m/s
To determine which object has more kinetic energy, we can calculate the kinetic energy using the formula:
Kinetic energy = (1/2) * mass * velocity^2
Let's calculate the kinetic energy for each car:
For the blue car:
Kinetic energy = (1/2) * 500 kg * (30 m/s)^2 = 225,000 J
For the yellow car:
Kinetic energy = (1/2) * 500 kg * (12 m/s)^2 = 36,000 J
For the green car:
Kinetic energy = (1/2) * 500 kg * (21 m/s)^2 = 220,500 J
For the red car:
Kinetic energy = (1/2) * 500 kg * (3 m/s)^2 = 2,250 J
Therefore, the blue car has the highest kinetic energy with 225,000 J, followed by the green car with 220,500 J, the yellow car with 36,000 J, and the red car with 2,250 J.
Kinetic energy = (1/2) * mass * velocity^2
Let's calculate the kinetic energy for each car:
For the blue car:
Kinetic energy = (1/2) * 500 kg * (30 m/s)^2 = 225,000 J
For the yellow car:
Kinetic energy = (1/2) * 500 kg * (12 m/s)^2 = 36,000 J
For the green car:
Kinetic energy = (1/2) * 500 kg * (21 m/s)^2 = 220,500 J
For the red car:
Kinetic energy = (1/2) * 500 kg * (3 m/s)^2 = 2,250 J
Therefore, the blue car has the highest kinetic energy with 225,000 J, followed by the green car with 220,500 J, the yellow car with 36,000 J, and the red car with 2,250 J.