Multiple Choice
Which of the following is an example of kinetic energy being converted to potential energy?
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9. Work & Energy
Intro to Energy & Kinetic Energy
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Which of the following objects has the highest kinetic energy?
A
A 2 kg object moving at 3 m/s
B
A 3 kg object moving at 2 m/s
C
A 4 kg object moving at 1 m/s
D
A 1 kg object moving at 5 m/s
Verified step by step guidance1
Understand the formula for kinetic energy: \( KE = \frac{1}{2}mv^2 \), where \( m \) is the mass and \( v \) is the velocity of the object.
Calculate the kinetic energy for each object using the formula. Start with the 2 kg object moving at 3 m/s: \( KE = \frac{1}{2} \times 2 \times (3)^2 \).
Next, calculate the kinetic energy for the 3 kg object moving at 2 m/s: \( KE = \frac{1}{2} \times 3 \times (2)^2 \).
Then, calculate the kinetic energy for the 4 kg object moving at 1 m/s: \( KE = \frac{1}{2} \times 4 \times (1)^2 \).
Finally, calculate the kinetic energy for the 1 kg object moving at 5 m/s: \( KE = \frac{1}{2} \times 1 \times (5)^2 \). Compare all the calculated kinetic energies to determine which object has the highest kinetic energy.
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