Which object has the greatest kinetic energy? (1 point)
• a yellow car with a mass of 500 kg moving at 12 m/s
•a blue car with a mass of 500 kg moving at 30 m/s
•a red car mass of 500 kg moving at 3 m/s
• a green car with a mass of 500kg moving at 21 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 need to use the formula for kinetic energy:
Kinetic Energy (KE) = 1/2 * mass * velocity^2
Now, let's calculate the kinetic energy for each object:
1) The yellow car with a mass of 500 kg moving at 12 m/s:
KE = 1/2 * 500 kg * (12 m/s)^2 = 36,000 Joules
2) The blue car with a mass of 500 kg moving at 30 m/s:
KE = 1/2 * 500 kg * (30 m/s)^2 = 225,000 Joules
3) The red car with a mass of 500 kg moving at 3 m/s:
KE = 1/2 * 500 kg * (3 m/s)^2 = 2,250 Joules
4) The green car with a mass of 500 kg moving at 21 m/s:
KE = 1/2 * 500 kg * (21 m/s)^2 = 220,500 Joules
By comparing the calculated kinetic energies, we can conclude that the blue car with a mass of 500 kg moving at 30 m/s has the greatest kinetic energy, which is 225,000 Joules.
To determine which object has the greatest kinetic energy, we need to use the formula for kinetic energy:
Kinetic Energy = (1/2) * mass * velocity^2
Let's calculate the kinetic energy for each of the given cars:
1. The yellow car with a mass of 500 kg and a velocity of 12 m/s:
Kinetic Energy = (1/2) * 500 kg * (12 m/s)^2 = 36,000 joules
2. The blue car with a mass of 500 kg and a velocity of 30 m/s:
Kinetic Energy = (1/2) * 500 kg * (30 m/s)^2 = 225,000 joules
3. The red car with a mass of 500 kg and a velocity of 3 m/s:
Kinetic Energy = (1/2) * 500 kg * (3 m/s)^2 = 2,250 joules
4. The green car with a mass of 500 kg and a velocity of 21 m/s:
Kinetic Energy = (1/2) * 500 kg * (21 m/s)^2 = 220,500 joules
Comparing the kinetic energies of each car, we can see that the blue car has the greatest kinetic energy with 225,000 joules.
Therefore, the blue car has the greatest kinetic energy among the given options.