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A 2 kg object is moving with a velocity of 4 m/s. What is its kinetic energy? (2
A 2 kg object is moving with a velocity of 4 m/s. What is its kinetic energy? (2023)
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Practice Questions
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Q1
A 2 kg object is moving with a velocity of 4 m/s. What is its kinetic energy? (2023)
16 J
8 J
4 J
32 J
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Kinetic Energy (KE) = 1/2 * m * v^2 = 1/2 * 2 kg * (4 m/s)^2 = 16 J.
Questions & Step-by-step Solutions
1 item
Q
Q: A 2 kg object is moving with a velocity of 4 m/s. What is its kinetic energy? (2023)
Solution:
Kinetic Energy (KE) = 1/2 * m * v^2 = 1/2 * 2 kg * (4 m/s)^2 = 16 J.
Steps: 8
Show Steps
Step 1: Identify the mass (m) of the object. In this case, m = 2 kg.
Step 2: Identify the velocity (v) of the object. Here, v = 4 m/s.
Step 3: Use the formula for kinetic energy (KE), which is KE = 1/2 * m * v^2.
Step 4: Substitute the values into the formula: KE = 1/2 * 2 kg * (4 m/s)^2.
Step 5: Calculate (4 m/s)^2, which is 16 m^2/s^2.
Step 6: Now substitute this value back into the equation: KE = 1/2 * 2 kg * 16 m^2/s^2.
Step 7: Calculate 1/2 * 2 kg, which equals 1 kg.
Step 8: Now multiply 1 kg by 16 m^2/s^2 to get KE = 16 J.
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