Question

The kinetic energy of a 3 kg object moving at a speed of 4 m/s is: please I need it fast

Answer 1

`\huge\boxed{\sf K.E. = 16 \ J}`

Step-by-step explanation:

Given data:

Mass = m = 3 kg

Speed = v = 4 m/s

Required:

Kinetic Energy = K.E = ?

Formula:

`\displaystyle K.E. =(1)/(2) mv^2`

Solution:

`\displaystyle K.E. =(1)/(2) (3)(4)^2\\\\K.E. =(1)/(2) (3)(16)\\\\K.E. = (2)(8)\\\\K.E. = 16 \ J\\\\\rule[225]{225}{2}`