A 3 kg object is moving with a speed of 10 m/s. What is its kinetic energy?
Practice Questions
Q1
A 3 kg object is moving with a speed of 10 m/s. What is its kinetic energy?
150 J
300 J
450 J
600 J
Questions & Step-by-Step Solutions
A 3 kg object is moving with a speed of 10 m/s. What is its kinetic energy?
Correct Answer: 150 J
Step 1: Identify the mass of the object. In this case, the mass (m) is 3 kg.
Step 2: Identify the speed of the object. The speed (v) is 10 m/s.
Step 3: Use the formula for kinetic energy, which is KE = 0.5 * m * v².
Step 4: Substitute the values into the formula: KE = 0.5 * 3 * (10)².
Step 5: Calculate (10)², which is 100.
Step 6: Now substitute back: KE = 0.5 * 3 * 100.
Step 7: Multiply 0.5 * 3 to get 1.5.
Step 8: Finally, multiply 1.5 * 100 to get 150.
Step 9: Therefore, the kinetic energy is 150 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.
