A 3 kg object is moving with a velocity of 4 m/s. What is its kinetic energy?

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Question: A 3 kg object is moving with a velocity of 4 m/s. What is its kinetic energy?

Options:

Correct Answer: 24 J

Solution:

Kinetic Energy = 0.5 × mass × velocity² = 0.5 × 3 kg × (4 m/s)² = 24 J.

A 3 kg object is moving with a velocity of 4 m/s. What is its kinetic energy?

A 3 kg object is moving with a velocity of 4 m/s. What is its kinetic energy?

Step 1: Identify the mass of the object. The mass is 3 kg.
Step 2: Identify the velocity of the object. The velocity is 4 m/s.
Step 3: Write down the formula for kinetic energy: Kinetic Energy = 0.5 × mass × velocity².
Step 4: Substitute the mass into the formula: Kinetic Energy = 0.5 × 3 kg × velocity².
Step 5: Calculate the square of the velocity: (4 m/s)² = 16 m²/s².
Step 6: Substitute the squared velocity into the formula: Kinetic Energy = 0.5 × 3 kg × 16 m²/s².
Step 7: Multiply 0.5 by 3 kg to get 1.5 kg.
Step 8: Multiply 1.5 kg by 16 m²/s² to get 24 J.
Step 9: Conclude that the kinetic energy of the object is 24 Joules.

Kinetic Energy – Kinetic energy is the energy an object possesses due to its motion, calculated using the formula KE = 0.5 × mass × velocity².