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

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

Correct Answer: 24 J

Step 1: Identify the mass of the object. The mass (m) is given as 3 kg.
Step 2: Identify the speed of the object. The speed (v) is given as 4 m/s.
Step 3: Write down the formula for kinetic energy. The formula is Kinetic Energy = 0.5 * m * v².
Step 4: Substitute the mass and speed into the formula. This gives us Kinetic Energy = 0.5 * 3 * (4)².
Step 5: Calculate (4)². This equals 16.
Step 6: Now substitute back into the formula: Kinetic Energy = 0.5 * 3 * 16.
Step 7: Calculate 0.5 * 3, which equals 1.5.
Step 8: Now multiply 1.5 by 16. This equals 24.
Step 9: Therefore, the kinetic energy of the object is 24 Joules (J).

Kinetic Energy – Kinetic energy is the energy an object possesses due to its motion, calculated using the formula KE = 0.5 * m * v², where m is mass and v is velocity.