A 3 kg object is moving with a velocity of 6 m/s. What is its kinetic energy?
Practice Questions
Q1
A 3 kg object is moving with a velocity of 6 m/s. What is its kinetic energy?
54 J
36 J
18 J
72 J
Questions & Step-by-Step Solutions
A 3 kg object is moving with a velocity of 6 m/s. What is its kinetic energy?
Step 1: Identify the mass (m) of the object. In this case, m = 3 kg.
Step 2: Identify the velocity (v) of the object. Here, v = 6 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 * 3 * (6^2).
Step 5: Calculate (6^2), which is 36.
Step 6: Now substitute back: KE = 1/2 * 3 * 36.
Step 7: Calculate 1/2 * 3, which is 1.5.
Step 8: Finally, multiply 1.5 by 36 to get KE = 54 J.
Kinetic Energy – Kinetic energy is the energy an object possesses due to its motion, calculated using the formula KE = 1/2 * m * v^2, where m is mass and v is velocity.
