Question

a 2.0 kg bowling ball is moving down the lane at a speed of 8.0 m/s. what is the kinetic energy (ke) of the ball?

Explanation:

Step1: Identify the formula for kinetic energy

The formula for kinetic energy is \( KE=\frac{1}{2}mv^{2} \), where \( m \) is the mass and \( v \) is the velocity.

Step2: Substitute the given values into the formula

Given \( m = 2.0\space kg \) and \( v=8.0\space m/s \).
Substitute into \( KE=\frac{1}{2}\times2.0\times(8.0)^{2} \).
First calculate \( (8.0)^{2}=64 \).
Then \( \frac{1}{2}\times2.0 = 1 \).
So \( KE=1\times64=64\space J \).

Answer:

64 J