Question

A cell phone weighing 80 grams is flying through the air at 15 m/s. what is the kinetic energy?

Answer 1

Answer:

The answer is 9 J

Explanation:

The kinetic energy of an object can be found by using the formula

$KE = \frac{1}{2} m {v}^{2}$

where

m is the mass

v is the velocity

From the question

m = 80 g = 0.08 kg

v = 15 m/s

We have

$KE = \frac{1}{2} \times 0.08 \times {15}^{2} \\ = 0.04 \times 225$

We have the final answer as

9 J

Hope this helps you