A 2 kg object is moving with a velocity of 4 m/s. What is its kinetic energy? (2
Practice Questions
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
Questions & Step-by-Step Solutions
A 2 kg object is moving with a velocity of 4 m/s. What is its kinetic energy? (2023)
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.
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.
