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A 10 kg object is moving with a velocity of 3 m/s. What is its kinetic energy?
A 10 kg object is moving with a velocity of 3 m/s. What is its kinetic energy?
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Q1
A 10 kg object is moving with a velocity of 3 m/s. What is its kinetic energy?
15 J
30 J
45 J
60 J
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Kinetic energy = 0.5 × m × v² = 0.5 × 10 kg × (3 m/s)² = 45 J.
Questions & Step-by-step Solutions
1 item
Q
Q: A 10 kg object is moving with a velocity of 3 m/s. What is its kinetic energy?
Solution:
Kinetic energy = 0.5 × m × v² = 0.5 × 10 kg × (3 m/s)² = 45 J.
Steps: 8
Show Steps
Step 1: Identify the mass of the object. In this case, the mass (m) is 10 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 Kinetic Energy = 0.5 × m × v².
Step 4: Substitute the values into the formula: Kinetic Energy = 0.5 × 10 kg × (3 m/s)².
Step 5: Calculate (3 m/s)², which is 9 m²/s².
Step 6: Multiply 10 kg by 9 m²/s² to get 90 kg·m²/s².
Step 7: Multiply 90 kg·m²/s² by 0.5 to get 45 J.
Step 8: Conclude that the kinetic energy of the object is 45 Joules.
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