Question

A drone flies upward with a velocity of 5m/s and has a kinetic energy of 90J What is the mass of the drone?

O 5.4 kg
1.9 kg
7.2 kg
3.6 kg

Answer 1

m = 7.2 kg

Step-by-step explanation:

Given that,

The velocity of the drone, v = 5 m/s

The kinetic energy of the drone, E = 90 J

We need to find the mass of the drone. The formula for the kinetic energy of an object is given by :

`K=(1)/(2)mv^2\\\\m=(2K)/(v^2)\\\\m=(2* 90)/((5)^2)\\\\m=7.2\ kg`

So, the mass of the drone is 7.2 kg.