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A 6 kg object is moving with a velocity of 3 m/s. What is its kinetic energy?
A 6 kg object is moving with a velocity of 3 m/s. What is its kinetic energy?
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Practice Questions
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Q1
A 6 kg object is moving with a velocity of 3 m/s. What is its kinetic energy?
27 J
36 J
54 J
18 J
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Kinetic energy KE = 0.5 * m * v² = 0.5 * 6 kg * (3 m/s)² = 27 J.
Questions & Step-by-step Solutions
1 item
Q
Q: A 6 kg object is moving with a velocity of 3 m/s. What is its kinetic energy?
Solution:
Kinetic energy KE = 0.5 * m * v² = 0.5 * 6 kg * (3 m/s)² = 27 J.
Steps: 8
Show Steps
Step 1: Identify the mass of the object. In this case, the mass (m) is 6 kg.
Step 2: Identify the velocity of the object. Here, the velocity (v) is 3 m/s.
Step 3: Use the formula for kinetic energy, which is KE = 0.5 * m * v².
Step 4: Substitute the values into the formula: KE = 0.5 * 6 kg * (3 m/s)².
Step 5: Calculate (3 m/s)², which is 9 m²/s².
Step 6: Multiply 6 kg by 9 m²/s² to get 54 kg*m²/s².
Step 7: Multiply 54 kg*m²/s² by 0.5 to get 27 J.
Step 8: Conclude that the kinetic energy of the object is 27 Joules.
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