Question

a 1,500 kg car is driving at a speed of 20 m/s. how much kinetic energy does the car have? remember : $e_k = \frac{1}{2}mv^2$ $e_k = ?$ j

Explanation:

Step1: Identify given values

Mass \( m = 1500 \, \text{kg} \), velocity \( v = 20 \, \text{m/s} \), formula \( E_K=\frac{1}{2}mv^2 \)

Step2: Substitute values into formula

\( E_K=\frac{1}{2}\times1500\times(20)^2 \)

Step3: Calculate \( (20)^2 = 400 \)

\( E_K=\frac{1}{2}\times1500\times400 \)

Step4: Calculate \( \frac{1}{2}\times1500 = 750 \)

\( E_K = 750\times400 \)

Step5: Multiply 750 and 400

\( E_K = 300000 \)

Answer:

\( 300000 \)