Which object has the greatest kinetic energy?(1 point)
Responses
a yellow car with a mass of 500 kg moving at 12 m/s
a yellow car with a mass of 500 kg moving at 12 m/s
a green car with a mass of 500kg moving at 21 m/s
a green car with a mass of 500kg moving at 21 m/s
a red car mass of 500 kg moving at 3 m/s
a red car mass of 500 kg moving at 3 m/s
a blue car with a mass of 500 kg moving at 30 m/s
The blue car with a mass of 500 kg moving at 30 m/s has the greatest kinetic energy.
To determine which object has the greatest kinetic energy, we can use the formula for kinetic energy, which is given by:
Kinetic Energy = 1/2 * mass * velocity^2
Let's calculate the kinetic energy for each object:
1. For the yellow car with a mass of 500 kg moving at 12 m/s:
Kinetic Energy = 1/2 * 500 kg * (12 m/s)^2 = 36,000 J
2. For the green car with a mass of 500 kg moving at 21 m/s:
Kinetic Energy = 1/2 * 500 kg * (21 m/s)^2 = 110,250 J
3. For the red car with a mass of 500 kg moving at 3 m/s:
Kinetic Energy = 1/2 * 500 kg * (3 m/s)^2 = 2,250 J
4. For the blue car with a mass of 500 kg moving at 30 m/s:
Kinetic Energy = 1/2 * 500 kg * (30 m/s)^2 = 225,000 J
Comparing the values, we can see that the blue car with a mass of 500 kg moving at 30 m/s has the greatest kinetic energy of 225,000 J.