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A 5 kg object is moving with a velocity of 10 m/s. What is its kinetic energy?
A 5 kg object is moving with a velocity of 10 m/s. What is its kinetic energy?
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Practice Questions
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Q1
A 5 kg object is moving with a velocity of 10 m/s. What is its kinetic energy?
25 J
50 J
100 J
250 J
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Kinetic energy (KE) = 0.5 * mass * velocity² = 0.5 * 5 * (10)² = 250 J.
Questions & Step-by-step Solutions
1 item
Q
Q: A 5 kg object is moving with a velocity of 10 m/s. What is its kinetic energy?
Solution:
Kinetic energy (KE) = 0.5 * mass * velocity² = 0.5 * 5 * (10)² = 250 J.
Steps: 8
Show Steps
Step 1: Identify the mass of the object. In this case, the mass is 5 kg.
Step 2: Identify the velocity of the object. Here, the velocity is 10 m/s.
Step 3: Use the formula for kinetic energy, which is KE = 0.5 * mass * velocity².
Step 4: Substitute the values into the formula: KE = 0.5 * 5 kg * (10 m/s)².
Step 5: Calculate the square of the velocity: (10 m/s)² = 100 m²/s².
Step 6: Multiply the mass by the squared velocity: 5 kg * 100 m²/s² = 500 kg*m²/s².
Step 7: Multiply by 0.5: 0.5 * 500 kg*m²/s² = 250 J.
Step 8: Conclude that the kinetic energy of the object is 250 Joules.
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