Question

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

Answer 1

The answer is 9 J

Step-by-step explanation:

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

`KE = (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 = (1)/(2) * 0.08 * {15}^(2) \\ = 0.04 * 225`

We have the final answer as

9 J

Hope this helps you