Question

A 1.5 kg object is moving with a velocity of \( 4 \, \text{m/s} \). What is its kinetic energy?

• A. \( 12 \, \text{J} \)
• B. \( 24 \, \text{J} \)
• C. \( 6 \, \text{J} \)
• D. \( 48 \, \text{J} \)

Hint:

The kinetic energy of an object is calculated using the formula \( KE = \frac{1}{2} m v^2 \). Make sure to square the velocity before multiplying.

Answer 1

The Correct Option is A

Step 1: Use the formula for kinetic energy \[ KE = \frac{1}{2} m v^2 \] Where: - \( KE \) is the kinetic energy - \( m \) is the mass of the object - \( v \) is the velocity Given: - \( m = 1.5 \, \text{kg} \) - \( v = 4 \, \text{m/s} \) Substitute the values into the formula: \[ KE = \frac{1}{2} \times 1.5 \times (4)^2 = 12 \, \text{J} \] Answer: Therefore, the kinetic energy of the object is \( 12 \, \text{J} \). So, the correct answer is option (1).