# How much work would it take to horizontally accelerate an object with a mass of 2 kg to 4 ms^-1 on a surface with a kinetic friction coefficient of 1?

Dec 8, 2017

The work done is $= 16 J$

#### Explanation:

The mass of the object is $m = 2 k g$

The speed is $v = 4 m {s}^{-} 1$

The work done is equal to the kinetic energy

$W = \frac{1}{2} m {v}^{2} = \frac{1}{2} \cdot 2 \cdot {4}^{2} = 16 J$