A 1 kg object is moving with a velocity of 4 m/s. What is its kinetic energy? (2
Practice Questions
Q1
A 1 kg object is moving with a velocity of 4 m/s. What is its kinetic energy? (2021)
8 J
4 J
16 J
2 J
Questions & Step-by-Step Solutions
A 1 kg object is moving with a velocity of 4 m/s. What is its kinetic energy? (2021)
Step 1: Identify the mass (m) of the object. In this case, m = 1 kg.
Step 2: Identify the velocity (v) of the object. Here, v = 4 m/s.
Step 3: Write down the formula for kinetic energy (KE). The formula is KE = 1/2 * m * v^2.
Step 4: Substitute the values of m and v into the formula. This gives us KE = 1/2 * 1 kg * (4 m/s)^2.
Step 5: Calculate (4 m/s)^2. This equals 16 m^2/s^2.
Step 6: Multiply 1 kg by 16 m^2/s^2. This gives us 16 kg*m^2/s^2.
Step 7: Now, multiply by 1/2. So, 1/2 * 16 kg*m^2/s^2 = 8 J.
Step 8: The kinetic energy of the object is 8 Joules (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.
